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Veronique Ziegler
Jefferson Lab
BaBarrsquos Contributions
charm
light quark
heavy quark
BaBar last day of running
2
3
Before 2003 4 cs mesons known
2 S-wave mesons Ds (JP = 0minus) and Dslowast (1minus)
2 P-wave mesons Ds1(2536) (1+) and Ds2(2573) (2+)
Potential model mass predictions were in good agreement with the measured masses
BaBar discovery of two new states in 2003Ds0
lowast(2317)+ rarr Ds+ π0
Ds1 (2460)+ rarr Ds+ π0
with masses well below those predicted by existing potential models and this led to search for alternate interpretations
BaBar discovery of the DsJlowast(2860)
DsJ(2860)+ rarr D0 K+
DsJ(2860)+ rarr D+ KS
and another structure in the 27 GeVc2
mass region
adding yet another component to the
complex DsJ spectroscopy picturehellip
PhysRevLett 90 242001 (2003)
PhysRevLett 97 222001 (2006)
_
4
BaBar as a Charm Baryon Factory
Access to rare decay modes amp
High precision studies of charm baryon properties 5
Baryon (decaying to a Lc+) masses estimated as mass differences wrt the Lc
+ with PDG Lc+
mass added more precise Lc+ mass measurement affects these baryon mass measurements
PhysRevD720520062005
2
0
S
MeVc 179Q
evts 844627
KK
LL
c
2
0
S
0
MeVc 102Q
evts 20264
KK
L
c
2MeVc )(1440)(04205012286
)( 0
syststat
mKKc
S
L L
2MeVc )(1260)(18103032286
)( 00
syststat
mKKc
S
L
2MeVc 140462286)(
tmeasuremen Combined
L
cm
PDG PDG
2MeVc 6092284 2004PDG
First Observation
Using low Q-value modes
6
Production from B decays (+some continuum)
Continuum production
7
Study of baryon production in B decays
Substantial B meson decay to Xc0+
First observations of these decays
Branching Fractions amp cross section measurements
BF measurement (Phys Rev D 78 112003(2008))
indicates 3-body final state favored in agreement with the predictions of
Hou and Soni (Phys Rev Lett 86 4247 (2001))
Spin measurement possibilities (Phys Rev D 78 112003(2008))
Use of B- Lc
+ p p- to get mass width
and spin of c(2455) distribution favors
spin 12 [solid line] over
spin 32 [dotted curve]
efficiency-corrected
background-subtracted
Xc
_
8
Precision mass and width measurements on excited charm cascades
Observation of the Xc(2980)+0 and Xc(3077)+0 amp evidence for the Xc(3055)+
and the Xc(3123)+
First observation of the excited singly charmed baryon 11131151113115Wc(css) in
the radiative decay Wc 1113115Wc
0 g1113115
First observation of a charm baryons decayingto a charm meson
First observation of the Lc(2880)+ in D0p decay
Discovery of a new state at m = 29398 MeVc2
9
From charm baryon
decays
10
PRL 97 112001(2006)
11
Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information
Only obvious structure
X (1530)0 rarr X- p+
Lc+ signal region
Rectangular Dalitz plot
Note m2(X- K+) depends linearly on cosqX
12
wj = radic10 P2(cosq)
unweighted
uncorrected
efficiency-corrected unweighted
m(X- p+) distribution in data
X(1530)0
wj = radic10 P2(cosq)
from Lc+ signal
region
wj = (7 radic2) P4(cosq)
from Lc+ signal
region
Efficiency-corrected
P2 Moment Dist
Efficiency-corrected
P4 Moment DistLc
+ signal
region
spin 32 clearly established
spin 52 ruled out
analysis by establishing J=32
also established positive parity
(ie P-wave)
Spin 52 Test
bull PL moments (L ge 6) give no signal
Spin 32 Test
Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information
13
cosq
L
m(L KS) (GeVc2)
Accumulation of events in KSK+
near threshold evidence of a0(980)+
L KS
a0(980)+
X(1690)0
For J(X[1690]) = 12
Background-subtracted efficiency-corrected
data
― Integrated signal function smeared by mass
resolution [Histogram]
― Signal function with no resolution smearing
― |A(a0(980)|2 contribution
― |A(X(1690)|2 contribution
― Interference term contribution
For the X(1690)0 we obtain
m =16829 plusmn 09(stat)plusmn 08(syst) MeVc2
G = 93-17
+20(stat)plusmn 04(syst) MeV
J =12 favored
14
14
Insight into charm baryon production
Measurements of charm baryon spin from exclusive B decay processes
Insight into light quark spectroscopy from hyperon resonances produced in charm baryon decay
L )2393(c
Lc
cX
0
cW
cW
L )2625(c
L )2880(c
L )2940(c
)2520(c
)2800(c
cX
)2645(cX
)2790(cX
)2815(cX
)2980(cX
)3077(cX
)3055(cX
)3123(cX
15
16
charmonium
Discovery of a narrow width state with mass 31 GeV
discovery of the charm quark
Jy was the first observed cc
bound state
SLAC
ψ(3100)
e+e-rarrhadronspN rarr e+e- X
J
BNL
Jψ resonance
by SLAC
and BNL
PR
L 3
3 1406 (
1974)
PR
L 3
3 1
404 (1
974)
17
JPC = 1- -
B rarr cc K() decay Initial state radiation
Two-photon collision
C= + J= 0 2
Double charmonium
production
Recoil against
Jy C = +18
All charmonium production mechanisms seen at BaBar
The X(3872) a charmonium-like state
in Bplusmn rarr Kplusmn Jψ pp- decays
(PRD77 111101(2008)) opened the
door to exotic meson interpretations BaBar pins down C-parity (+) from
observation of the X in Jy g and
excludes the isovector hypothesis
from lack of evidence for a charged
partner
BaBar discovers the Y(4260) in ISR
e+e- rarr gISR Y(4260) rarr Jψ pp- decays
and the subsequently the Y(4350) in
e+e- rarr gISR Y(4350) rarr ψ(2S) pp-
(PRL95 142001(2006))
Improbable interpretation of both
states as charmonium
Also significant BaBar contributions to
charmonium states seen in double charmonium
production amp 2 photon collisions
(eg gg rarr hc rarr K+ K- p0h [PRD 89 112004 (2014))
Y(4260) rarr Jψ pp-
19
20
bottomonium
CUSB Collaboration
observed bb
bound state
20
21
Opened the doorhellip
over 30 years of discoveries in the Bottomonium Sector
The Search for the hb at BaBar
22
BF measurements
B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4
Compatible with predictions
Combined values of mass and HF splitting
mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)
(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2
The hb(1S) discovered in Y(3S) data
and confirmed in Y(2S) data
S Godfrey JL Rosner
PRD 64 074011 (2001)
hbhb
23
bullResolution dominated
bullSmall Doppler broadening
)2( )2( SPbJ g
Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions
24
Evidence for the hb(1P) in the decay (3S) pohb
bull 10814plusmn 2813 signal events
M(hb) = 9902plusmn4 plusmn2 MeVc2
(CG=989987plusmn027 MeVc2 )
uncertainty from
background fit
background-subtracted result
hb signal
region
PhysRev D84 (2011) 091101
25
PhysRevLett 108 032001 (2012)
hb(2P)
bull Measured hb(12P) mass values consistent with predictions
bull BaBar hb(1P) mass measurement consistent with Bellersquos
bull Observed hb production rate enhancement may be indicative of exotic process violating
HQ spin-flip suppression
hb(1P)
The hb(1P) and hb(2P) seen by Belle
in e+e-rarr pp- transitions at the (5S)
pp- recoil mass spectrum
26
Spectroscopy at J-Lab with 12 GeV
Unique photo-production research
opportunities to identify exotics by
amplitude analyses of final states
hadron spectroscopy by coherent
bremsstrahlung production in Hall D
and by tagged (quasi-)real photoproduction
in Hall B to yield complementary results
Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy
heavy flavor baryon data hellip
COMPASS hadron program is to study the light-quark hadron spectrum and in
particular to search for evidence of hybrids and glueballs (COMPASS confirms
previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)
BESIII continues to make detailed explorations of the region just above the
charmonium threshold
BaBar continues to produce interesting results such as the analysis of BrarrJψ f K
[hep-ex 14077244 recently accepted in PRD] that shows an interesting
structure in m(Jψ f)hellip 27
charm
light quark
heavy quark
BaBar last day of running
2
3
Before 2003 4 cs mesons known
2 S-wave mesons Ds (JP = 0minus) and Dslowast (1minus)
2 P-wave mesons Ds1(2536) (1+) and Ds2(2573) (2+)
Potential model mass predictions were in good agreement with the measured masses
BaBar discovery of two new states in 2003Ds0
lowast(2317)+ rarr Ds+ π0
Ds1 (2460)+ rarr Ds+ π0
with masses well below those predicted by existing potential models and this led to search for alternate interpretations
BaBar discovery of the DsJlowast(2860)
DsJ(2860)+ rarr D0 K+
DsJ(2860)+ rarr D+ KS
and another structure in the 27 GeVc2
mass region
adding yet another component to the
complex DsJ spectroscopy picturehellip
PhysRevLett 90 242001 (2003)
PhysRevLett 97 222001 (2006)
_
4
BaBar as a Charm Baryon Factory
Access to rare decay modes amp
High precision studies of charm baryon properties 5
Baryon (decaying to a Lc+) masses estimated as mass differences wrt the Lc
+ with PDG Lc+
mass added more precise Lc+ mass measurement affects these baryon mass measurements
PhysRevD720520062005
2
0
S
MeVc 179Q
evts 844627
KK
LL
c
2
0
S
0
MeVc 102Q
evts 20264
KK
L
c
2MeVc )(1440)(04205012286
)( 0
syststat
mKKc
S
L L
2MeVc )(1260)(18103032286
)( 00
syststat
mKKc
S
L
2MeVc 140462286)(
tmeasuremen Combined
L
cm
PDG PDG
2MeVc 6092284 2004PDG
First Observation
Using low Q-value modes
6
Production from B decays (+some continuum)
Continuum production
7
Study of baryon production in B decays
Substantial B meson decay to Xc0+
First observations of these decays
Branching Fractions amp cross section measurements
BF measurement (Phys Rev D 78 112003(2008))
indicates 3-body final state favored in agreement with the predictions of
Hou and Soni (Phys Rev Lett 86 4247 (2001))
Spin measurement possibilities (Phys Rev D 78 112003(2008))
Use of B- Lc
+ p p- to get mass width
and spin of c(2455) distribution favors
spin 12 [solid line] over
spin 32 [dotted curve]
efficiency-corrected
background-subtracted
Xc
_
8
Precision mass and width measurements on excited charm cascades
Observation of the Xc(2980)+0 and Xc(3077)+0 amp evidence for the Xc(3055)+
and the Xc(3123)+
First observation of the excited singly charmed baryon 11131151113115Wc(css) in
the radiative decay Wc 1113115Wc
0 g1113115
First observation of a charm baryons decayingto a charm meson
First observation of the Lc(2880)+ in D0p decay
Discovery of a new state at m = 29398 MeVc2
9
From charm baryon
decays
10
PRL 97 112001(2006)
11
Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information
Only obvious structure
X (1530)0 rarr X- p+
Lc+ signal region
Rectangular Dalitz plot
Note m2(X- K+) depends linearly on cosqX
12
wj = radic10 P2(cosq)
unweighted
uncorrected
efficiency-corrected unweighted
m(X- p+) distribution in data
X(1530)0
wj = radic10 P2(cosq)
from Lc+ signal
region
wj = (7 radic2) P4(cosq)
from Lc+ signal
region
Efficiency-corrected
P2 Moment Dist
Efficiency-corrected
P4 Moment DistLc
+ signal
region
spin 32 clearly established
spin 52 ruled out
analysis by establishing J=32
also established positive parity
(ie P-wave)
Spin 52 Test
bull PL moments (L ge 6) give no signal
Spin 32 Test
Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information
13
cosq
L
m(L KS) (GeVc2)
Accumulation of events in KSK+
near threshold evidence of a0(980)+
L KS
a0(980)+
X(1690)0
For J(X[1690]) = 12
Background-subtracted efficiency-corrected
data
― Integrated signal function smeared by mass
resolution [Histogram]
― Signal function with no resolution smearing
― |A(a0(980)|2 contribution
― |A(X(1690)|2 contribution
― Interference term contribution
For the X(1690)0 we obtain
m =16829 plusmn 09(stat)plusmn 08(syst) MeVc2
G = 93-17
+20(stat)plusmn 04(syst) MeV
J =12 favored
14
14
Insight into charm baryon production
Measurements of charm baryon spin from exclusive B decay processes
Insight into light quark spectroscopy from hyperon resonances produced in charm baryon decay
L )2393(c
Lc
cX
0
cW
cW
L )2625(c
L )2880(c
L )2940(c
)2520(c
)2800(c
cX
)2645(cX
)2790(cX
)2815(cX
)2980(cX
)3077(cX
)3055(cX
)3123(cX
15
16
charmonium
Discovery of a narrow width state with mass 31 GeV
discovery of the charm quark
Jy was the first observed cc
bound state
SLAC
ψ(3100)
e+e-rarrhadronspN rarr e+e- X
J
BNL
Jψ resonance
by SLAC
and BNL
PR
L 3
3 1406 (
1974)
PR
L 3
3 1
404 (1
974)
17
JPC = 1- -
B rarr cc K() decay Initial state radiation
Two-photon collision
C= + J= 0 2
Double charmonium
production
Recoil against
Jy C = +18
All charmonium production mechanisms seen at BaBar
The X(3872) a charmonium-like state
in Bplusmn rarr Kplusmn Jψ pp- decays
(PRD77 111101(2008)) opened the
door to exotic meson interpretations BaBar pins down C-parity (+) from
observation of the X in Jy g and
excludes the isovector hypothesis
from lack of evidence for a charged
partner
BaBar discovers the Y(4260) in ISR
e+e- rarr gISR Y(4260) rarr Jψ pp- decays
and the subsequently the Y(4350) in
e+e- rarr gISR Y(4350) rarr ψ(2S) pp-
(PRL95 142001(2006))
Improbable interpretation of both
states as charmonium
Also significant BaBar contributions to
charmonium states seen in double charmonium
production amp 2 photon collisions
(eg gg rarr hc rarr K+ K- p0h [PRD 89 112004 (2014))
Y(4260) rarr Jψ pp-
19
20
bottomonium
CUSB Collaboration
observed bb
bound state
20
21
Opened the doorhellip
over 30 years of discoveries in the Bottomonium Sector
The Search for the hb at BaBar
22
BF measurements
B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4
Compatible with predictions
Combined values of mass and HF splitting
mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)
(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2
The hb(1S) discovered in Y(3S) data
and confirmed in Y(2S) data
S Godfrey JL Rosner
PRD 64 074011 (2001)
hbhb
23
bullResolution dominated
bullSmall Doppler broadening
)2( )2( SPbJ g
Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions
24
Evidence for the hb(1P) in the decay (3S) pohb
bull 10814plusmn 2813 signal events
M(hb) = 9902plusmn4 plusmn2 MeVc2
(CG=989987plusmn027 MeVc2 )
uncertainty from
background fit
background-subtracted result
hb signal
region
PhysRev D84 (2011) 091101
25
PhysRevLett 108 032001 (2012)
hb(2P)
bull Measured hb(12P) mass values consistent with predictions
bull BaBar hb(1P) mass measurement consistent with Bellersquos
bull Observed hb production rate enhancement may be indicative of exotic process violating
HQ spin-flip suppression
hb(1P)
The hb(1P) and hb(2P) seen by Belle
in e+e-rarr pp- transitions at the (5S)
pp- recoil mass spectrum
26
Spectroscopy at J-Lab with 12 GeV
Unique photo-production research
opportunities to identify exotics by
amplitude analyses of final states
hadron spectroscopy by coherent
bremsstrahlung production in Hall D
and by tagged (quasi-)real photoproduction
in Hall B to yield complementary results
Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy
heavy flavor baryon data hellip
COMPASS hadron program is to study the light-quark hadron spectrum and in
particular to search for evidence of hybrids and glueballs (COMPASS confirms
previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)
BESIII continues to make detailed explorations of the region just above the
charmonium threshold
BaBar continues to produce interesting results such as the analysis of BrarrJψ f K
[hep-ex 14077244 recently accepted in PRD] that shows an interesting
structure in m(Jψ f)hellip 27
3
Before 2003 4 cs mesons known
2 S-wave mesons Ds (JP = 0minus) and Dslowast (1minus)
2 P-wave mesons Ds1(2536) (1+) and Ds2(2573) (2+)
Potential model mass predictions were in good agreement with the measured masses
BaBar discovery of two new states in 2003Ds0
lowast(2317)+ rarr Ds+ π0
Ds1 (2460)+ rarr Ds+ π0
with masses well below those predicted by existing potential models and this led to search for alternate interpretations
BaBar discovery of the DsJlowast(2860)
DsJ(2860)+ rarr D0 K+
DsJ(2860)+ rarr D+ KS
and another structure in the 27 GeVc2
mass region
adding yet another component to the
complex DsJ spectroscopy picturehellip
PhysRevLett 90 242001 (2003)
PhysRevLett 97 222001 (2006)
_
4
BaBar as a Charm Baryon Factory
Access to rare decay modes amp
High precision studies of charm baryon properties 5
Baryon (decaying to a Lc+) masses estimated as mass differences wrt the Lc
+ with PDG Lc+
mass added more precise Lc+ mass measurement affects these baryon mass measurements
PhysRevD720520062005
2
0
S
MeVc 179Q
evts 844627
KK
LL
c
2
0
S
0
MeVc 102Q
evts 20264
KK
L
c
2MeVc )(1440)(04205012286
)( 0
syststat
mKKc
S
L L
2MeVc )(1260)(18103032286
)( 00
syststat
mKKc
S
L
2MeVc 140462286)(
tmeasuremen Combined
L
cm
PDG PDG
2MeVc 6092284 2004PDG
First Observation
Using low Q-value modes
6
Production from B decays (+some continuum)
Continuum production
7
Study of baryon production in B decays
Substantial B meson decay to Xc0+
First observations of these decays
Branching Fractions amp cross section measurements
BF measurement (Phys Rev D 78 112003(2008))
indicates 3-body final state favored in agreement with the predictions of
Hou and Soni (Phys Rev Lett 86 4247 (2001))
Spin measurement possibilities (Phys Rev D 78 112003(2008))
Use of B- Lc
+ p p- to get mass width
and spin of c(2455) distribution favors
spin 12 [solid line] over
spin 32 [dotted curve]
efficiency-corrected
background-subtracted
Xc
_
8
Precision mass and width measurements on excited charm cascades
Observation of the Xc(2980)+0 and Xc(3077)+0 amp evidence for the Xc(3055)+
and the Xc(3123)+
First observation of the excited singly charmed baryon 11131151113115Wc(css) in
the radiative decay Wc 1113115Wc
0 g1113115
First observation of a charm baryons decayingto a charm meson
First observation of the Lc(2880)+ in D0p decay
Discovery of a new state at m = 29398 MeVc2
9
From charm baryon
decays
10
PRL 97 112001(2006)
11
Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information
Only obvious structure
X (1530)0 rarr X- p+
Lc+ signal region
Rectangular Dalitz plot
Note m2(X- K+) depends linearly on cosqX
12
wj = radic10 P2(cosq)
unweighted
uncorrected
efficiency-corrected unweighted
m(X- p+) distribution in data
X(1530)0
wj = radic10 P2(cosq)
from Lc+ signal
region
wj = (7 radic2) P4(cosq)
from Lc+ signal
region
Efficiency-corrected
P2 Moment Dist
Efficiency-corrected
P4 Moment DistLc
+ signal
region
spin 32 clearly established
spin 52 ruled out
analysis by establishing J=32
also established positive parity
(ie P-wave)
Spin 52 Test
bull PL moments (L ge 6) give no signal
Spin 32 Test
Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information
13
cosq
L
m(L KS) (GeVc2)
Accumulation of events in KSK+
near threshold evidence of a0(980)+
L KS
a0(980)+
X(1690)0
For J(X[1690]) = 12
Background-subtracted efficiency-corrected
data
― Integrated signal function smeared by mass
resolution [Histogram]
― Signal function with no resolution smearing
― |A(a0(980)|2 contribution
― |A(X(1690)|2 contribution
― Interference term contribution
For the X(1690)0 we obtain
m =16829 plusmn 09(stat)plusmn 08(syst) MeVc2
G = 93-17
+20(stat)plusmn 04(syst) MeV
J =12 favored
14
14
Insight into charm baryon production
Measurements of charm baryon spin from exclusive B decay processes
Insight into light quark spectroscopy from hyperon resonances produced in charm baryon decay
L )2393(c
Lc
cX
0
cW
cW
L )2625(c
L )2880(c
L )2940(c
)2520(c
)2800(c
cX
)2645(cX
)2790(cX
)2815(cX
)2980(cX
)3077(cX
)3055(cX
)3123(cX
15
16
charmonium
Discovery of a narrow width state with mass 31 GeV
discovery of the charm quark
Jy was the first observed cc
bound state
SLAC
ψ(3100)
e+e-rarrhadronspN rarr e+e- X
J
BNL
Jψ resonance
by SLAC
and BNL
PR
L 3
3 1406 (
1974)
PR
L 3
3 1
404 (1
974)
17
JPC = 1- -
B rarr cc K() decay Initial state radiation
Two-photon collision
C= + J= 0 2
Double charmonium
production
Recoil against
Jy C = +18
All charmonium production mechanisms seen at BaBar
The X(3872) a charmonium-like state
in Bplusmn rarr Kplusmn Jψ pp- decays
(PRD77 111101(2008)) opened the
door to exotic meson interpretations BaBar pins down C-parity (+) from
observation of the X in Jy g and
excludes the isovector hypothesis
from lack of evidence for a charged
partner
BaBar discovers the Y(4260) in ISR
e+e- rarr gISR Y(4260) rarr Jψ pp- decays
and the subsequently the Y(4350) in
e+e- rarr gISR Y(4350) rarr ψ(2S) pp-
(PRL95 142001(2006))
Improbable interpretation of both
states as charmonium
Also significant BaBar contributions to
charmonium states seen in double charmonium
production amp 2 photon collisions
(eg gg rarr hc rarr K+ K- p0h [PRD 89 112004 (2014))
Y(4260) rarr Jψ pp-
19
20
bottomonium
CUSB Collaboration
observed bb
bound state
20
21
Opened the doorhellip
over 30 years of discoveries in the Bottomonium Sector
The Search for the hb at BaBar
22
BF measurements
B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4
Compatible with predictions
Combined values of mass and HF splitting
mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)
(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2
The hb(1S) discovered in Y(3S) data
and confirmed in Y(2S) data
S Godfrey JL Rosner
PRD 64 074011 (2001)
hbhb
23
bullResolution dominated
bullSmall Doppler broadening
)2( )2( SPbJ g
Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions
24
Evidence for the hb(1P) in the decay (3S) pohb
bull 10814plusmn 2813 signal events
M(hb) = 9902plusmn4 plusmn2 MeVc2
(CG=989987plusmn027 MeVc2 )
uncertainty from
background fit
background-subtracted result
hb signal
region
PhysRev D84 (2011) 091101
25
PhysRevLett 108 032001 (2012)
hb(2P)
bull Measured hb(12P) mass values consistent with predictions
bull BaBar hb(1P) mass measurement consistent with Bellersquos
bull Observed hb production rate enhancement may be indicative of exotic process violating
HQ spin-flip suppression
hb(1P)
The hb(1P) and hb(2P) seen by Belle
in e+e-rarr pp- transitions at the (5S)
pp- recoil mass spectrum
26
Spectroscopy at J-Lab with 12 GeV
Unique photo-production research
opportunities to identify exotics by
amplitude analyses of final states
hadron spectroscopy by coherent
bremsstrahlung production in Hall D
and by tagged (quasi-)real photoproduction
in Hall B to yield complementary results
Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy
heavy flavor baryon data hellip
COMPASS hadron program is to study the light-quark hadron spectrum and in
particular to search for evidence of hybrids and glueballs (COMPASS confirms
previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)
BESIII continues to make detailed explorations of the region just above the
charmonium threshold
BaBar continues to produce interesting results such as the analysis of BrarrJψ f K
[hep-ex 14077244 recently accepted in PRD] that shows an interesting
structure in m(Jψ f)hellip 27
Before 2003 4 cs mesons known
2 S-wave mesons Ds (JP = 0minus) and Dslowast (1minus)
2 P-wave mesons Ds1(2536) (1+) and Ds2(2573) (2+)
Potential model mass predictions were in good agreement with the measured masses
BaBar discovery of two new states in 2003Ds0
lowast(2317)+ rarr Ds+ π0
Ds1 (2460)+ rarr Ds+ π0
with masses well below those predicted by existing potential models and this led to search for alternate interpretations
BaBar discovery of the DsJlowast(2860)
DsJ(2860)+ rarr D0 K+
DsJ(2860)+ rarr D+ KS
and another structure in the 27 GeVc2
mass region
adding yet another component to the
complex DsJ spectroscopy picturehellip
PhysRevLett 90 242001 (2003)
PhysRevLett 97 222001 (2006)
_
4
BaBar as a Charm Baryon Factory
Access to rare decay modes amp
High precision studies of charm baryon properties 5
Baryon (decaying to a Lc+) masses estimated as mass differences wrt the Lc
+ with PDG Lc+
mass added more precise Lc+ mass measurement affects these baryon mass measurements
PhysRevD720520062005
2
0
S
MeVc 179Q
evts 844627
KK
LL
c
2
0
S
0
MeVc 102Q
evts 20264
KK
L
c
2MeVc )(1440)(04205012286
)( 0
syststat
mKKc
S
L L
2MeVc )(1260)(18103032286
)( 00
syststat
mKKc
S
L
2MeVc 140462286)(
tmeasuremen Combined
L
cm
PDG PDG
2MeVc 6092284 2004PDG
First Observation
Using low Q-value modes
6
Production from B decays (+some continuum)
Continuum production
7
Study of baryon production in B decays
Substantial B meson decay to Xc0+
First observations of these decays
Branching Fractions amp cross section measurements
BF measurement (Phys Rev D 78 112003(2008))
indicates 3-body final state favored in agreement with the predictions of
Hou and Soni (Phys Rev Lett 86 4247 (2001))
Spin measurement possibilities (Phys Rev D 78 112003(2008))
Use of B- Lc
+ p p- to get mass width
and spin of c(2455) distribution favors
spin 12 [solid line] over
spin 32 [dotted curve]
efficiency-corrected
background-subtracted
Xc
_
8
Precision mass and width measurements on excited charm cascades
Observation of the Xc(2980)+0 and Xc(3077)+0 amp evidence for the Xc(3055)+
and the Xc(3123)+
First observation of the excited singly charmed baryon 11131151113115Wc(css) in
the radiative decay Wc 1113115Wc
0 g1113115
First observation of a charm baryons decayingto a charm meson
First observation of the Lc(2880)+ in D0p decay
Discovery of a new state at m = 29398 MeVc2
9
From charm baryon
decays
10
PRL 97 112001(2006)
11
Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information
Only obvious structure
X (1530)0 rarr X- p+
Lc+ signal region
Rectangular Dalitz plot
Note m2(X- K+) depends linearly on cosqX
12
wj = radic10 P2(cosq)
unweighted
uncorrected
efficiency-corrected unweighted
m(X- p+) distribution in data
X(1530)0
wj = radic10 P2(cosq)
from Lc+ signal
region
wj = (7 radic2) P4(cosq)
from Lc+ signal
region
Efficiency-corrected
P2 Moment Dist
Efficiency-corrected
P4 Moment DistLc
+ signal
region
spin 32 clearly established
spin 52 ruled out
analysis by establishing J=32
also established positive parity
(ie P-wave)
Spin 52 Test
bull PL moments (L ge 6) give no signal
Spin 32 Test
Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information
13
cosq
L
m(L KS) (GeVc2)
Accumulation of events in KSK+
near threshold evidence of a0(980)+
L KS
a0(980)+
X(1690)0
For J(X[1690]) = 12
Background-subtracted efficiency-corrected
data
― Integrated signal function smeared by mass
resolution [Histogram]
― Signal function with no resolution smearing
― |A(a0(980)|2 contribution
― |A(X(1690)|2 contribution
― Interference term contribution
For the X(1690)0 we obtain
m =16829 plusmn 09(stat)plusmn 08(syst) MeVc2
G = 93-17
+20(stat)plusmn 04(syst) MeV
J =12 favored
14
14
Insight into charm baryon production
Measurements of charm baryon spin from exclusive B decay processes
Insight into light quark spectroscopy from hyperon resonances produced in charm baryon decay
L )2393(c
Lc
cX
0
cW
cW
L )2625(c
L )2880(c
L )2940(c
)2520(c
)2800(c
cX
)2645(cX
)2790(cX
)2815(cX
)2980(cX
)3077(cX
)3055(cX
)3123(cX
15
16
charmonium
Discovery of a narrow width state with mass 31 GeV
discovery of the charm quark
Jy was the first observed cc
bound state
SLAC
ψ(3100)
e+e-rarrhadronspN rarr e+e- X
J
BNL
Jψ resonance
by SLAC
and BNL
PR
L 3
3 1406 (
1974)
PR
L 3
3 1
404 (1
974)
17
JPC = 1- -
B rarr cc K() decay Initial state radiation
Two-photon collision
C= + J= 0 2
Double charmonium
production
Recoil against
Jy C = +18
All charmonium production mechanisms seen at BaBar
The X(3872) a charmonium-like state
in Bplusmn rarr Kplusmn Jψ pp- decays
(PRD77 111101(2008)) opened the
door to exotic meson interpretations BaBar pins down C-parity (+) from
observation of the X in Jy g and
excludes the isovector hypothesis
from lack of evidence for a charged
partner
BaBar discovers the Y(4260) in ISR
e+e- rarr gISR Y(4260) rarr Jψ pp- decays
and the subsequently the Y(4350) in
e+e- rarr gISR Y(4350) rarr ψ(2S) pp-
(PRL95 142001(2006))
Improbable interpretation of both
states as charmonium
Also significant BaBar contributions to
charmonium states seen in double charmonium
production amp 2 photon collisions
(eg gg rarr hc rarr K+ K- p0h [PRD 89 112004 (2014))
Y(4260) rarr Jψ pp-
19
20
bottomonium
CUSB Collaboration
observed bb
bound state
20
21
Opened the doorhellip
over 30 years of discoveries in the Bottomonium Sector
The Search for the hb at BaBar
22
BF measurements
B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4
Compatible with predictions
Combined values of mass and HF splitting
mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)
(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2
The hb(1S) discovered in Y(3S) data
and confirmed in Y(2S) data
S Godfrey JL Rosner
PRD 64 074011 (2001)
hbhb
23
bullResolution dominated
bullSmall Doppler broadening
)2( )2( SPbJ g
Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions
24
Evidence for the hb(1P) in the decay (3S) pohb
bull 10814plusmn 2813 signal events
M(hb) = 9902plusmn4 plusmn2 MeVc2
(CG=989987plusmn027 MeVc2 )
uncertainty from
background fit
background-subtracted result
hb signal
region
PhysRev D84 (2011) 091101
25
PhysRevLett 108 032001 (2012)
hb(2P)
bull Measured hb(12P) mass values consistent with predictions
bull BaBar hb(1P) mass measurement consistent with Bellersquos
bull Observed hb production rate enhancement may be indicative of exotic process violating
HQ spin-flip suppression
hb(1P)
The hb(1P) and hb(2P) seen by Belle
in e+e-rarr pp- transitions at the (5S)
pp- recoil mass spectrum
26
Spectroscopy at J-Lab with 12 GeV
Unique photo-production research
opportunities to identify exotics by
amplitude analyses of final states
hadron spectroscopy by coherent
bremsstrahlung production in Hall D
and by tagged (quasi-)real photoproduction
in Hall B to yield complementary results
Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy
heavy flavor baryon data hellip
COMPASS hadron program is to study the light-quark hadron spectrum and in
particular to search for evidence of hybrids and glueballs (COMPASS confirms
previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)
BESIII continues to make detailed explorations of the region just above the
charmonium threshold
BaBar continues to produce interesting results such as the analysis of BrarrJψ f K
[hep-ex 14077244 recently accepted in PRD] that shows an interesting
structure in m(Jψ f)hellip 27
BaBar as a Charm Baryon Factory
Access to rare decay modes amp
High precision studies of charm baryon properties 5
Baryon (decaying to a Lc+) masses estimated as mass differences wrt the Lc
+ with PDG Lc+
mass added more precise Lc+ mass measurement affects these baryon mass measurements
PhysRevD720520062005
2
0
S
MeVc 179Q
evts 844627
KK
LL
c
2
0
S
0
MeVc 102Q
evts 20264
KK
L
c
2MeVc )(1440)(04205012286
)( 0
syststat
mKKc
S
L L
2MeVc )(1260)(18103032286
)( 00
syststat
mKKc
S
L
2MeVc 140462286)(
tmeasuremen Combined
L
cm
PDG PDG
2MeVc 6092284 2004PDG
First Observation
Using low Q-value modes
6
Production from B decays (+some continuum)
Continuum production
7
Study of baryon production in B decays
Substantial B meson decay to Xc0+
First observations of these decays
Branching Fractions amp cross section measurements
BF measurement (Phys Rev D 78 112003(2008))
indicates 3-body final state favored in agreement with the predictions of
Hou and Soni (Phys Rev Lett 86 4247 (2001))
Spin measurement possibilities (Phys Rev D 78 112003(2008))
Use of B- Lc
+ p p- to get mass width
and spin of c(2455) distribution favors
spin 12 [solid line] over
spin 32 [dotted curve]
efficiency-corrected
background-subtracted
Xc
_
8
Precision mass and width measurements on excited charm cascades
Observation of the Xc(2980)+0 and Xc(3077)+0 amp evidence for the Xc(3055)+
and the Xc(3123)+
First observation of the excited singly charmed baryon 11131151113115Wc(css) in
the radiative decay Wc 1113115Wc
0 g1113115
First observation of a charm baryons decayingto a charm meson
First observation of the Lc(2880)+ in D0p decay
Discovery of a new state at m = 29398 MeVc2
9
From charm baryon
decays
10
PRL 97 112001(2006)
11
Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information
Only obvious structure
X (1530)0 rarr X- p+
Lc+ signal region
Rectangular Dalitz plot
Note m2(X- K+) depends linearly on cosqX
12
wj = radic10 P2(cosq)
unweighted
uncorrected
efficiency-corrected unweighted
m(X- p+) distribution in data
X(1530)0
wj = radic10 P2(cosq)
from Lc+ signal
region
wj = (7 radic2) P4(cosq)
from Lc+ signal
region
Efficiency-corrected
P2 Moment Dist
Efficiency-corrected
P4 Moment DistLc
+ signal
region
spin 32 clearly established
spin 52 ruled out
analysis by establishing J=32
also established positive parity
(ie P-wave)
Spin 52 Test
bull PL moments (L ge 6) give no signal
Spin 32 Test
Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information
13
cosq
L
m(L KS) (GeVc2)
Accumulation of events in KSK+
near threshold evidence of a0(980)+
L KS
a0(980)+
X(1690)0
For J(X[1690]) = 12
Background-subtracted efficiency-corrected
data
― Integrated signal function smeared by mass
resolution [Histogram]
― Signal function with no resolution smearing
― |A(a0(980)|2 contribution
― |A(X(1690)|2 contribution
― Interference term contribution
For the X(1690)0 we obtain
m =16829 plusmn 09(stat)plusmn 08(syst) MeVc2
G = 93-17
+20(stat)plusmn 04(syst) MeV
J =12 favored
14
14
Insight into charm baryon production
Measurements of charm baryon spin from exclusive B decay processes
Insight into light quark spectroscopy from hyperon resonances produced in charm baryon decay
L )2393(c
Lc
cX
0
cW
cW
L )2625(c
L )2880(c
L )2940(c
)2520(c
)2800(c
cX
)2645(cX
)2790(cX
)2815(cX
)2980(cX
)3077(cX
)3055(cX
)3123(cX
15
16
charmonium
Discovery of a narrow width state with mass 31 GeV
discovery of the charm quark
Jy was the first observed cc
bound state
SLAC
ψ(3100)
e+e-rarrhadronspN rarr e+e- X
J
BNL
Jψ resonance
by SLAC
and BNL
PR
L 3
3 1406 (
1974)
PR
L 3
3 1
404 (1
974)
17
JPC = 1- -
B rarr cc K() decay Initial state radiation
Two-photon collision
C= + J= 0 2
Double charmonium
production
Recoil against
Jy C = +18
All charmonium production mechanisms seen at BaBar
The X(3872) a charmonium-like state
in Bplusmn rarr Kplusmn Jψ pp- decays
(PRD77 111101(2008)) opened the
door to exotic meson interpretations BaBar pins down C-parity (+) from
observation of the X in Jy g and
excludes the isovector hypothesis
from lack of evidence for a charged
partner
BaBar discovers the Y(4260) in ISR
e+e- rarr gISR Y(4260) rarr Jψ pp- decays
and the subsequently the Y(4350) in
e+e- rarr gISR Y(4350) rarr ψ(2S) pp-
(PRL95 142001(2006))
Improbable interpretation of both
states as charmonium
Also significant BaBar contributions to
charmonium states seen in double charmonium
production amp 2 photon collisions
(eg gg rarr hc rarr K+ K- p0h [PRD 89 112004 (2014))
Y(4260) rarr Jψ pp-
19
20
bottomonium
CUSB Collaboration
observed bb
bound state
20
21
Opened the doorhellip
over 30 years of discoveries in the Bottomonium Sector
The Search for the hb at BaBar
22
BF measurements
B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4
Compatible with predictions
Combined values of mass and HF splitting
mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)
(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2
The hb(1S) discovered in Y(3S) data
and confirmed in Y(2S) data
S Godfrey JL Rosner
PRD 64 074011 (2001)
hbhb
23
bullResolution dominated
bullSmall Doppler broadening
)2( )2( SPbJ g
Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions
24
Evidence for the hb(1P) in the decay (3S) pohb
bull 10814plusmn 2813 signal events
M(hb) = 9902plusmn4 plusmn2 MeVc2
(CG=989987plusmn027 MeVc2 )
uncertainty from
background fit
background-subtracted result
hb signal
region
PhysRev D84 (2011) 091101
25
PhysRevLett 108 032001 (2012)
hb(2P)
bull Measured hb(12P) mass values consistent with predictions
bull BaBar hb(1P) mass measurement consistent with Bellersquos
bull Observed hb production rate enhancement may be indicative of exotic process violating
HQ spin-flip suppression
hb(1P)
The hb(1P) and hb(2P) seen by Belle
in e+e-rarr pp- transitions at the (5S)
pp- recoil mass spectrum
26
Spectroscopy at J-Lab with 12 GeV
Unique photo-production research
opportunities to identify exotics by
amplitude analyses of final states
hadron spectroscopy by coherent
bremsstrahlung production in Hall D
and by tagged (quasi-)real photoproduction
in Hall B to yield complementary results
Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy
heavy flavor baryon data hellip
COMPASS hadron program is to study the light-quark hadron spectrum and in
particular to search for evidence of hybrids and glueballs (COMPASS confirms
previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)
BESIII continues to make detailed explorations of the region just above the
charmonium threshold
BaBar continues to produce interesting results such as the analysis of BrarrJψ f K
[hep-ex 14077244 recently accepted in PRD] that shows an interesting
structure in m(Jψ f)hellip 27
Baryon (decaying to a Lc+) masses estimated as mass differences wrt the Lc
+ with PDG Lc+
mass added more precise Lc+ mass measurement affects these baryon mass measurements
PhysRevD720520062005
2
0
S
MeVc 179Q
evts 844627
KK
LL
c
2
0
S
0
MeVc 102Q
evts 20264
KK
L
c
2MeVc )(1440)(04205012286
)( 0
syststat
mKKc
S
L L
2MeVc )(1260)(18103032286
)( 00
syststat
mKKc
S
L
2MeVc 140462286)(
tmeasuremen Combined
L
cm
PDG PDG
2MeVc 6092284 2004PDG
First Observation
Using low Q-value modes
6
Production from B decays (+some continuum)
Continuum production
7
Study of baryon production in B decays
Substantial B meson decay to Xc0+
First observations of these decays
Branching Fractions amp cross section measurements
BF measurement (Phys Rev D 78 112003(2008))
indicates 3-body final state favored in agreement with the predictions of
Hou and Soni (Phys Rev Lett 86 4247 (2001))
Spin measurement possibilities (Phys Rev D 78 112003(2008))
Use of B- Lc
+ p p- to get mass width
and spin of c(2455) distribution favors
spin 12 [solid line] over
spin 32 [dotted curve]
efficiency-corrected
background-subtracted
Xc
_
8
Precision mass and width measurements on excited charm cascades
Observation of the Xc(2980)+0 and Xc(3077)+0 amp evidence for the Xc(3055)+
and the Xc(3123)+
First observation of the excited singly charmed baryon 11131151113115Wc(css) in
the radiative decay Wc 1113115Wc
0 g1113115
First observation of a charm baryons decayingto a charm meson
First observation of the Lc(2880)+ in D0p decay
Discovery of a new state at m = 29398 MeVc2
9
From charm baryon
decays
10
PRL 97 112001(2006)
11
Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information
Only obvious structure
X (1530)0 rarr X- p+
Lc+ signal region
Rectangular Dalitz plot
Note m2(X- K+) depends linearly on cosqX
12
wj = radic10 P2(cosq)
unweighted
uncorrected
efficiency-corrected unweighted
m(X- p+) distribution in data
X(1530)0
wj = radic10 P2(cosq)
from Lc+ signal
region
wj = (7 radic2) P4(cosq)
from Lc+ signal
region
Efficiency-corrected
P2 Moment Dist
Efficiency-corrected
P4 Moment DistLc
+ signal
region
spin 32 clearly established
spin 52 ruled out
analysis by establishing J=32
also established positive parity
(ie P-wave)
Spin 52 Test
bull PL moments (L ge 6) give no signal
Spin 32 Test
Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information
13
cosq
L
m(L KS) (GeVc2)
Accumulation of events in KSK+
near threshold evidence of a0(980)+
L KS
a0(980)+
X(1690)0
For J(X[1690]) = 12
Background-subtracted efficiency-corrected
data
― Integrated signal function smeared by mass
resolution [Histogram]
― Signal function with no resolution smearing
― |A(a0(980)|2 contribution
― |A(X(1690)|2 contribution
― Interference term contribution
For the X(1690)0 we obtain
m =16829 plusmn 09(stat)plusmn 08(syst) MeVc2
G = 93-17
+20(stat)plusmn 04(syst) MeV
J =12 favored
14
14
Insight into charm baryon production
Measurements of charm baryon spin from exclusive B decay processes
Insight into light quark spectroscopy from hyperon resonances produced in charm baryon decay
L )2393(c
Lc
cX
0
cW
cW
L )2625(c
L )2880(c
L )2940(c
)2520(c
)2800(c
cX
)2645(cX
)2790(cX
)2815(cX
)2980(cX
)3077(cX
)3055(cX
)3123(cX
15
16
charmonium
Discovery of a narrow width state with mass 31 GeV
discovery of the charm quark
Jy was the first observed cc
bound state
SLAC
ψ(3100)
e+e-rarrhadronspN rarr e+e- X
J
BNL
Jψ resonance
by SLAC
and BNL
PR
L 3
3 1406 (
1974)
PR
L 3
3 1
404 (1
974)
17
JPC = 1- -
B rarr cc K() decay Initial state radiation
Two-photon collision
C= + J= 0 2
Double charmonium
production
Recoil against
Jy C = +18
All charmonium production mechanisms seen at BaBar
The X(3872) a charmonium-like state
in Bplusmn rarr Kplusmn Jψ pp- decays
(PRD77 111101(2008)) opened the
door to exotic meson interpretations BaBar pins down C-parity (+) from
observation of the X in Jy g and
excludes the isovector hypothesis
from lack of evidence for a charged
partner
BaBar discovers the Y(4260) in ISR
e+e- rarr gISR Y(4260) rarr Jψ pp- decays
and the subsequently the Y(4350) in
e+e- rarr gISR Y(4350) rarr ψ(2S) pp-
(PRL95 142001(2006))
Improbable interpretation of both
states as charmonium
Also significant BaBar contributions to
charmonium states seen in double charmonium
production amp 2 photon collisions
(eg gg rarr hc rarr K+ K- p0h [PRD 89 112004 (2014))
Y(4260) rarr Jψ pp-
19
20
bottomonium
CUSB Collaboration
observed bb
bound state
20
21
Opened the doorhellip
over 30 years of discoveries in the Bottomonium Sector
The Search for the hb at BaBar
22
BF measurements
B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4
Compatible with predictions
Combined values of mass and HF splitting
mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)
(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2
The hb(1S) discovered in Y(3S) data
and confirmed in Y(2S) data
S Godfrey JL Rosner
PRD 64 074011 (2001)
hbhb
23
bullResolution dominated
bullSmall Doppler broadening
)2( )2( SPbJ g
Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions
24
Evidence for the hb(1P) in the decay (3S) pohb
bull 10814plusmn 2813 signal events
M(hb) = 9902plusmn4 plusmn2 MeVc2
(CG=989987plusmn027 MeVc2 )
uncertainty from
background fit
background-subtracted result
hb signal
region
PhysRev D84 (2011) 091101
25
PhysRevLett 108 032001 (2012)
hb(2P)
bull Measured hb(12P) mass values consistent with predictions
bull BaBar hb(1P) mass measurement consistent with Bellersquos
bull Observed hb production rate enhancement may be indicative of exotic process violating
HQ spin-flip suppression
hb(1P)
The hb(1P) and hb(2P) seen by Belle
in e+e-rarr pp- transitions at the (5S)
pp- recoil mass spectrum
26
Spectroscopy at J-Lab with 12 GeV
Unique photo-production research
opportunities to identify exotics by
amplitude analyses of final states
hadron spectroscopy by coherent
bremsstrahlung production in Hall D
and by tagged (quasi-)real photoproduction
in Hall B to yield complementary results
Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy
heavy flavor baryon data hellip
COMPASS hadron program is to study the light-quark hadron spectrum and in
particular to search for evidence of hybrids and glueballs (COMPASS confirms
previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)
BESIII continues to make detailed explorations of the region just above the
charmonium threshold
BaBar continues to produce interesting results such as the analysis of BrarrJψ f K
[hep-ex 14077244 recently accepted in PRD] that shows an interesting
structure in m(Jψ f)hellip 27
Production from B decays (+some continuum)
Continuum production
7
Study of baryon production in B decays
Substantial B meson decay to Xc0+
First observations of these decays
Branching Fractions amp cross section measurements
BF measurement (Phys Rev D 78 112003(2008))
indicates 3-body final state favored in agreement with the predictions of
Hou and Soni (Phys Rev Lett 86 4247 (2001))
Spin measurement possibilities (Phys Rev D 78 112003(2008))
Use of B- Lc
+ p p- to get mass width
and spin of c(2455) distribution favors
spin 12 [solid line] over
spin 32 [dotted curve]
efficiency-corrected
background-subtracted
Xc
_
8
Precision mass and width measurements on excited charm cascades
Observation of the Xc(2980)+0 and Xc(3077)+0 amp evidence for the Xc(3055)+
and the Xc(3123)+
First observation of the excited singly charmed baryon 11131151113115Wc(css) in
the radiative decay Wc 1113115Wc
0 g1113115
First observation of a charm baryons decayingto a charm meson
First observation of the Lc(2880)+ in D0p decay
Discovery of a new state at m = 29398 MeVc2
9
From charm baryon
decays
10
PRL 97 112001(2006)
11
Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information
Only obvious structure
X (1530)0 rarr X- p+
Lc+ signal region
Rectangular Dalitz plot
Note m2(X- K+) depends linearly on cosqX
12
wj = radic10 P2(cosq)
unweighted
uncorrected
efficiency-corrected unweighted
m(X- p+) distribution in data
X(1530)0
wj = radic10 P2(cosq)
from Lc+ signal
region
wj = (7 radic2) P4(cosq)
from Lc+ signal
region
Efficiency-corrected
P2 Moment Dist
Efficiency-corrected
P4 Moment DistLc
+ signal
region
spin 32 clearly established
spin 52 ruled out
analysis by establishing J=32
also established positive parity
(ie P-wave)
Spin 52 Test
bull PL moments (L ge 6) give no signal
Spin 32 Test
Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information
13
cosq
L
m(L KS) (GeVc2)
Accumulation of events in KSK+
near threshold evidence of a0(980)+
L KS
a0(980)+
X(1690)0
For J(X[1690]) = 12
Background-subtracted efficiency-corrected
data
― Integrated signal function smeared by mass
resolution [Histogram]
― Signal function with no resolution smearing
― |A(a0(980)|2 contribution
― |A(X(1690)|2 contribution
― Interference term contribution
For the X(1690)0 we obtain
m =16829 plusmn 09(stat)plusmn 08(syst) MeVc2
G = 93-17
+20(stat)plusmn 04(syst) MeV
J =12 favored
14
14
Insight into charm baryon production
Measurements of charm baryon spin from exclusive B decay processes
Insight into light quark spectroscopy from hyperon resonances produced in charm baryon decay
L )2393(c
Lc
cX
0
cW
cW
L )2625(c
L )2880(c
L )2940(c
)2520(c
)2800(c
cX
)2645(cX
)2790(cX
)2815(cX
)2980(cX
)3077(cX
)3055(cX
)3123(cX
15
16
charmonium
Discovery of a narrow width state with mass 31 GeV
discovery of the charm quark
Jy was the first observed cc
bound state
SLAC
ψ(3100)
e+e-rarrhadronspN rarr e+e- X
J
BNL
Jψ resonance
by SLAC
and BNL
PR
L 3
3 1406 (
1974)
PR
L 3
3 1
404 (1
974)
17
JPC = 1- -
B rarr cc K() decay Initial state radiation
Two-photon collision
C= + J= 0 2
Double charmonium
production
Recoil against
Jy C = +18
All charmonium production mechanisms seen at BaBar
The X(3872) a charmonium-like state
in Bplusmn rarr Kplusmn Jψ pp- decays
(PRD77 111101(2008)) opened the
door to exotic meson interpretations BaBar pins down C-parity (+) from
observation of the X in Jy g and
excludes the isovector hypothesis
from lack of evidence for a charged
partner
BaBar discovers the Y(4260) in ISR
e+e- rarr gISR Y(4260) rarr Jψ pp- decays
and the subsequently the Y(4350) in
e+e- rarr gISR Y(4350) rarr ψ(2S) pp-
(PRL95 142001(2006))
Improbable interpretation of both
states as charmonium
Also significant BaBar contributions to
charmonium states seen in double charmonium
production amp 2 photon collisions
(eg gg rarr hc rarr K+ K- p0h [PRD 89 112004 (2014))
Y(4260) rarr Jψ pp-
19
20
bottomonium
CUSB Collaboration
observed bb
bound state
20
21
Opened the doorhellip
over 30 years of discoveries in the Bottomonium Sector
The Search for the hb at BaBar
22
BF measurements
B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4
Compatible with predictions
Combined values of mass and HF splitting
mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)
(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2
The hb(1S) discovered in Y(3S) data
and confirmed in Y(2S) data
S Godfrey JL Rosner
PRD 64 074011 (2001)
hbhb
23
bullResolution dominated
bullSmall Doppler broadening
)2( )2( SPbJ g
Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions
24
Evidence for the hb(1P) in the decay (3S) pohb
bull 10814plusmn 2813 signal events
M(hb) = 9902plusmn4 plusmn2 MeVc2
(CG=989987plusmn027 MeVc2 )
uncertainty from
background fit
background-subtracted result
hb signal
region
PhysRev D84 (2011) 091101
25
PhysRevLett 108 032001 (2012)
hb(2P)
bull Measured hb(12P) mass values consistent with predictions
bull BaBar hb(1P) mass measurement consistent with Bellersquos
bull Observed hb production rate enhancement may be indicative of exotic process violating
HQ spin-flip suppression
hb(1P)
The hb(1P) and hb(2P) seen by Belle
in e+e-rarr pp- transitions at the (5S)
pp- recoil mass spectrum
26
Spectroscopy at J-Lab with 12 GeV
Unique photo-production research
opportunities to identify exotics by
amplitude analyses of final states
hadron spectroscopy by coherent
bremsstrahlung production in Hall D
and by tagged (quasi-)real photoproduction
in Hall B to yield complementary results
Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy
heavy flavor baryon data hellip
COMPASS hadron program is to study the light-quark hadron spectrum and in
particular to search for evidence of hybrids and glueballs (COMPASS confirms
previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)
BESIII continues to make detailed explorations of the region just above the
charmonium threshold
BaBar continues to produce interesting results such as the analysis of BrarrJψ f K
[hep-ex 14077244 recently accepted in PRD] that shows an interesting
structure in m(Jψ f)hellip 27
Study of baryon production in B decays
Substantial B meson decay to Xc0+
First observations of these decays
Branching Fractions amp cross section measurements
BF measurement (Phys Rev D 78 112003(2008))
indicates 3-body final state favored in agreement with the predictions of
Hou and Soni (Phys Rev Lett 86 4247 (2001))
Spin measurement possibilities (Phys Rev D 78 112003(2008))
Use of B- Lc
+ p p- to get mass width
and spin of c(2455) distribution favors
spin 12 [solid line] over
spin 32 [dotted curve]
efficiency-corrected
background-subtracted
Xc
_
8
Precision mass and width measurements on excited charm cascades
Observation of the Xc(2980)+0 and Xc(3077)+0 amp evidence for the Xc(3055)+
and the Xc(3123)+
First observation of the excited singly charmed baryon 11131151113115Wc(css) in
the radiative decay Wc 1113115Wc
0 g1113115
First observation of a charm baryons decayingto a charm meson
First observation of the Lc(2880)+ in D0p decay
Discovery of a new state at m = 29398 MeVc2
9
From charm baryon
decays
10
PRL 97 112001(2006)
11
Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information
Only obvious structure
X (1530)0 rarr X- p+
Lc+ signal region
Rectangular Dalitz plot
Note m2(X- K+) depends linearly on cosqX
12
wj = radic10 P2(cosq)
unweighted
uncorrected
efficiency-corrected unweighted
m(X- p+) distribution in data
X(1530)0
wj = radic10 P2(cosq)
from Lc+ signal
region
wj = (7 radic2) P4(cosq)
from Lc+ signal
region
Efficiency-corrected
P2 Moment Dist
Efficiency-corrected
P4 Moment DistLc
+ signal
region
spin 32 clearly established
spin 52 ruled out
analysis by establishing J=32
also established positive parity
(ie P-wave)
Spin 52 Test
bull PL moments (L ge 6) give no signal
Spin 32 Test
Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information
13
cosq
L
m(L KS) (GeVc2)
Accumulation of events in KSK+
near threshold evidence of a0(980)+
L KS
a0(980)+
X(1690)0
For J(X[1690]) = 12
Background-subtracted efficiency-corrected
data
― Integrated signal function smeared by mass
resolution [Histogram]
― Signal function with no resolution smearing
― |A(a0(980)|2 contribution
― |A(X(1690)|2 contribution
― Interference term contribution
For the X(1690)0 we obtain
m =16829 plusmn 09(stat)plusmn 08(syst) MeVc2
G = 93-17
+20(stat)plusmn 04(syst) MeV
J =12 favored
14
14
Insight into charm baryon production
Measurements of charm baryon spin from exclusive B decay processes
Insight into light quark spectroscopy from hyperon resonances produced in charm baryon decay
L )2393(c
Lc
cX
0
cW
cW
L )2625(c
L )2880(c
L )2940(c
)2520(c
)2800(c
cX
)2645(cX
)2790(cX
)2815(cX
)2980(cX
)3077(cX
)3055(cX
)3123(cX
15
16
charmonium
Discovery of a narrow width state with mass 31 GeV
discovery of the charm quark
Jy was the first observed cc
bound state
SLAC
ψ(3100)
e+e-rarrhadronspN rarr e+e- X
J
BNL
Jψ resonance
by SLAC
and BNL
PR
L 3
3 1406 (
1974)
PR
L 3
3 1
404 (1
974)
17
JPC = 1- -
B rarr cc K() decay Initial state radiation
Two-photon collision
C= + J= 0 2
Double charmonium
production
Recoil against
Jy C = +18
All charmonium production mechanisms seen at BaBar
The X(3872) a charmonium-like state
in Bplusmn rarr Kplusmn Jψ pp- decays
(PRD77 111101(2008)) opened the
door to exotic meson interpretations BaBar pins down C-parity (+) from
observation of the X in Jy g and
excludes the isovector hypothesis
from lack of evidence for a charged
partner
BaBar discovers the Y(4260) in ISR
e+e- rarr gISR Y(4260) rarr Jψ pp- decays
and the subsequently the Y(4350) in
e+e- rarr gISR Y(4350) rarr ψ(2S) pp-
(PRL95 142001(2006))
Improbable interpretation of both
states as charmonium
Also significant BaBar contributions to
charmonium states seen in double charmonium
production amp 2 photon collisions
(eg gg rarr hc rarr K+ K- p0h [PRD 89 112004 (2014))
Y(4260) rarr Jψ pp-
19
20
bottomonium
CUSB Collaboration
observed bb
bound state
20
21
Opened the doorhellip
over 30 years of discoveries in the Bottomonium Sector
The Search for the hb at BaBar
22
BF measurements
B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4
Compatible with predictions
Combined values of mass and HF splitting
mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)
(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2
The hb(1S) discovered in Y(3S) data
and confirmed in Y(2S) data
S Godfrey JL Rosner
PRD 64 074011 (2001)
hbhb
23
bullResolution dominated
bullSmall Doppler broadening
)2( )2( SPbJ g
Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions
24
Evidence for the hb(1P) in the decay (3S) pohb
bull 10814plusmn 2813 signal events
M(hb) = 9902plusmn4 plusmn2 MeVc2
(CG=989987plusmn027 MeVc2 )
uncertainty from
background fit
background-subtracted result
hb signal
region
PhysRev D84 (2011) 091101
25
PhysRevLett 108 032001 (2012)
hb(2P)
bull Measured hb(12P) mass values consistent with predictions
bull BaBar hb(1P) mass measurement consistent with Bellersquos
bull Observed hb production rate enhancement may be indicative of exotic process violating
HQ spin-flip suppression
hb(1P)
The hb(1P) and hb(2P) seen by Belle
in e+e-rarr pp- transitions at the (5S)
pp- recoil mass spectrum
26
Spectroscopy at J-Lab with 12 GeV
Unique photo-production research
opportunities to identify exotics by
amplitude analyses of final states
hadron spectroscopy by coherent
bremsstrahlung production in Hall D
and by tagged (quasi-)real photoproduction
in Hall B to yield complementary results
Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy
heavy flavor baryon data hellip
COMPASS hadron program is to study the light-quark hadron spectrum and in
particular to search for evidence of hybrids and glueballs (COMPASS confirms
previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)
BESIII continues to make detailed explorations of the region just above the
charmonium threshold
BaBar continues to produce interesting results such as the analysis of BrarrJψ f K
[hep-ex 14077244 recently accepted in PRD] that shows an interesting
structure in m(Jψ f)hellip 27
Precision mass and width measurements on excited charm cascades
Observation of the Xc(2980)+0 and Xc(3077)+0 amp evidence for the Xc(3055)+
and the Xc(3123)+
First observation of the excited singly charmed baryon 11131151113115Wc(css) in
the radiative decay Wc 1113115Wc
0 g1113115
First observation of a charm baryons decayingto a charm meson
First observation of the Lc(2880)+ in D0p decay
Discovery of a new state at m = 29398 MeVc2
9
From charm baryon
decays
10
PRL 97 112001(2006)
11
Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information
Only obvious structure
X (1530)0 rarr X- p+
Lc+ signal region
Rectangular Dalitz plot
Note m2(X- K+) depends linearly on cosqX
12
wj = radic10 P2(cosq)
unweighted
uncorrected
efficiency-corrected unweighted
m(X- p+) distribution in data
X(1530)0
wj = radic10 P2(cosq)
from Lc+ signal
region
wj = (7 radic2) P4(cosq)
from Lc+ signal
region
Efficiency-corrected
P2 Moment Dist
Efficiency-corrected
P4 Moment DistLc
+ signal
region
spin 32 clearly established
spin 52 ruled out
analysis by establishing J=32
also established positive parity
(ie P-wave)
Spin 52 Test
bull PL moments (L ge 6) give no signal
Spin 32 Test
Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information
13
cosq
L
m(L KS) (GeVc2)
Accumulation of events in KSK+
near threshold evidence of a0(980)+
L KS
a0(980)+
X(1690)0
For J(X[1690]) = 12
Background-subtracted efficiency-corrected
data
― Integrated signal function smeared by mass
resolution [Histogram]
― Signal function with no resolution smearing
― |A(a0(980)|2 contribution
― |A(X(1690)|2 contribution
― Interference term contribution
For the X(1690)0 we obtain
m =16829 plusmn 09(stat)plusmn 08(syst) MeVc2
G = 93-17
+20(stat)plusmn 04(syst) MeV
J =12 favored
14
14
Insight into charm baryon production
Measurements of charm baryon spin from exclusive B decay processes
Insight into light quark spectroscopy from hyperon resonances produced in charm baryon decay
L )2393(c
Lc
cX
0
cW
cW
L )2625(c
L )2880(c
L )2940(c
)2520(c
)2800(c
cX
)2645(cX
)2790(cX
)2815(cX
)2980(cX
)3077(cX
)3055(cX
)3123(cX
15
16
charmonium
Discovery of a narrow width state with mass 31 GeV
discovery of the charm quark
Jy was the first observed cc
bound state
SLAC
ψ(3100)
e+e-rarrhadronspN rarr e+e- X
J
BNL
Jψ resonance
by SLAC
and BNL
PR
L 3
3 1406 (
1974)
PR
L 3
3 1
404 (1
974)
17
JPC = 1- -
B rarr cc K() decay Initial state radiation
Two-photon collision
C= + J= 0 2
Double charmonium
production
Recoil against
Jy C = +18
All charmonium production mechanisms seen at BaBar
The X(3872) a charmonium-like state
in Bplusmn rarr Kplusmn Jψ pp- decays
(PRD77 111101(2008)) opened the
door to exotic meson interpretations BaBar pins down C-parity (+) from
observation of the X in Jy g and
excludes the isovector hypothesis
from lack of evidence for a charged
partner
BaBar discovers the Y(4260) in ISR
e+e- rarr gISR Y(4260) rarr Jψ pp- decays
and the subsequently the Y(4350) in
e+e- rarr gISR Y(4350) rarr ψ(2S) pp-
(PRL95 142001(2006))
Improbable interpretation of both
states as charmonium
Also significant BaBar contributions to
charmonium states seen in double charmonium
production amp 2 photon collisions
(eg gg rarr hc rarr K+ K- p0h [PRD 89 112004 (2014))
Y(4260) rarr Jψ pp-
19
20
bottomonium
CUSB Collaboration
observed bb
bound state
20
21
Opened the doorhellip
over 30 years of discoveries in the Bottomonium Sector
The Search for the hb at BaBar
22
BF measurements
B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4
Compatible with predictions
Combined values of mass and HF splitting
mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)
(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2
The hb(1S) discovered in Y(3S) data
and confirmed in Y(2S) data
S Godfrey JL Rosner
PRD 64 074011 (2001)
hbhb
23
bullResolution dominated
bullSmall Doppler broadening
)2( )2( SPbJ g
Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions
24
Evidence for the hb(1P) in the decay (3S) pohb
bull 10814plusmn 2813 signal events
M(hb) = 9902plusmn4 plusmn2 MeVc2
(CG=989987plusmn027 MeVc2 )
uncertainty from
background fit
background-subtracted result
hb signal
region
PhysRev D84 (2011) 091101
25
PhysRevLett 108 032001 (2012)
hb(2P)
bull Measured hb(12P) mass values consistent with predictions
bull BaBar hb(1P) mass measurement consistent with Bellersquos
bull Observed hb production rate enhancement may be indicative of exotic process violating
HQ spin-flip suppression
hb(1P)
The hb(1P) and hb(2P) seen by Belle
in e+e-rarr pp- transitions at the (5S)
pp- recoil mass spectrum
26
Spectroscopy at J-Lab with 12 GeV
Unique photo-production research
opportunities to identify exotics by
amplitude analyses of final states
hadron spectroscopy by coherent
bremsstrahlung production in Hall D
and by tagged (quasi-)real photoproduction
in Hall B to yield complementary results
Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy
heavy flavor baryon data hellip
COMPASS hadron program is to study the light-quark hadron spectrum and in
particular to search for evidence of hybrids and glueballs (COMPASS confirms
previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)
BESIII continues to make detailed explorations of the region just above the
charmonium threshold
BaBar continues to produce interesting results such as the analysis of BrarrJψ f K
[hep-ex 14077244 recently accepted in PRD] that shows an interesting
structure in m(Jψ f)hellip 27
From charm baryon
decays
10
PRL 97 112001(2006)
11
Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information
Only obvious structure
X (1530)0 rarr X- p+
Lc+ signal region
Rectangular Dalitz plot
Note m2(X- K+) depends linearly on cosqX
12
wj = radic10 P2(cosq)
unweighted
uncorrected
efficiency-corrected unweighted
m(X- p+) distribution in data
X(1530)0
wj = radic10 P2(cosq)
from Lc+ signal
region
wj = (7 radic2) P4(cosq)
from Lc+ signal
region
Efficiency-corrected
P2 Moment Dist
Efficiency-corrected
P4 Moment DistLc
+ signal
region
spin 32 clearly established
spin 52 ruled out
analysis by establishing J=32
also established positive parity
(ie P-wave)
Spin 52 Test
bull PL moments (L ge 6) give no signal
Spin 32 Test
Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information
13
cosq
L
m(L KS) (GeVc2)
Accumulation of events in KSK+
near threshold evidence of a0(980)+
L KS
a0(980)+
X(1690)0
For J(X[1690]) = 12
Background-subtracted efficiency-corrected
data
― Integrated signal function smeared by mass
resolution [Histogram]
― Signal function with no resolution smearing
― |A(a0(980)|2 contribution
― |A(X(1690)|2 contribution
― Interference term contribution
For the X(1690)0 we obtain
m =16829 plusmn 09(stat)plusmn 08(syst) MeVc2
G = 93-17
+20(stat)plusmn 04(syst) MeV
J =12 favored
14
14
Insight into charm baryon production
Measurements of charm baryon spin from exclusive B decay processes
Insight into light quark spectroscopy from hyperon resonances produced in charm baryon decay
L )2393(c
Lc
cX
0
cW
cW
L )2625(c
L )2880(c
L )2940(c
)2520(c
)2800(c
cX
)2645(cX
)2790(cX
)2815(cX
)2980(cX
)3077(cX
)3055(cX
)3123(cX
15
16
charmonium
Discovery of a narrow width state with mass 31 GeV
discovery of the charm quark
Jy was the first observed cc
bound state
SLAC
ψ(3100)
e+e-rarrhadronspN rarr e+e- X
J
BNL
Jψ resonance
by SLAC
and BNL
PR
L 3
3 1406 (
1974)
PR
L 3
3 1
404 (1
974)
17
JPC = 1- -
B rarr cc K() decay Initial state radiation
Two-photon collision
C= + J= 0 2
Double charmonium
production
Recoil against
Jy C = +18
All charmonium production mechanisms seen at BaBar
The X(3872) a charmonium-like state
in Bplusmn rarr Kplusmn Jψ pp- decays
(PRD77 111101(2008)) opened the
door to exotic meson interpretations BaBar pins down C-parity (+) from
observation of the X in Jy g and
excludes the isovector hypothesis
from lack of evidence for a charged
partner
BaBar discovers the Y(4260) in ISR
e+e- rarr gISR Y(4260) rarr Jψ pp- decays
and the subsequently the Y(4350) in
e+e- rarr gISR Y(4350) rarr ψ(2S) pp-
(PRL95 142001(2006))
Improbable interpretation of both
states as charmonium
Also significant BaBar contributions to
charmonium states seen in double charmonium
production amp 2 photon collisions
(eg gg rarr hc rarr K+ K- p0h [PRD 89 112004 (2014))
Y(4260) rarr Jψ pp-
19
20
bottomonium
CUSB Collaboration
observed bb
bound state
20
21
Opened the doorhellip
over 30 years of discoveries in the Bottomonium Sector
The Search for the hb at BaBar
22
BF measurements
B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4
Compatible with predictions
Combined values of mass and HF splitting
mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)
(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2
The hb(1S) discovered in Y(3S) data
and confirmed in Y(2S) data
S Godfrey JL Rosner
PRD 64 074011 (2001)
hbhb
23
bullResolution dominated
bullSmall Doppler broadening
)2( )2( SPbJ g
Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions
24
Evidence for the hb(1P) in the decay (3S) pohb
bull 10814plusmn 2813 signal events
M(hb) = 9902plusmn4 plusmn2 MeVc2
(CG=989987plusmn027 MeVc2 )
uncertainty from
background fit
background-subtracted result
hb signal
region
PhysRev D84 (2011) 091101
25
PhysRevLett 108 032001 (2012)
hb(2P)
bull Measured hb(12P) mass values consistent with predictions
bull BaBar hb(1P) mass measurement consistent with Bellersquos
bull Observed hb production rate enhancement may be indicative of exotic process violating
HQ spin-flip suppression
hb(1P)
The hb(1P) and hb(2P) seen by Belle
in e+e-rarr pp- transitions at the (5S)
pp- recoil mass spectrum
26
Spectroscopy at J-Lab with 12 GeV
Unique photo-production research
opportunities to identify exotics by
amplitude analyses of final states
hadron spectroscopy by coherent
bremsstrahlung production in Hall D
and by tagged (quasi-)real photoproduction
in Hall B to yield complementary results
Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy
heavy flavor baryon data hellip
COMPASS hadron program is to study the light-quark hadron spectrum and in
particular to search for evidence of hybrids and glueballs (COMPASS confirms
previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)
BESIII continues to make detailed explorations of the region just above the
charmonium threshold
BaBar continues to produce interesting results such as the analysis of BrarrJψ f K
[hep-ex 14077244 recently accepted in PRD] that shows an interesting
structure in m(Jψ f)hellip 27
PRL 97 112001(2006)
11
Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information
Only obvious structure
X (1530)0 rarr X- p+
Lc+ signal region
Rectangular Dalitz plot
Note m2(X- K+) depends linearly on cosqX
12
wj = radic10 P2(cosq)
unweighted
uncorrected
efficiency-corrected unweighted
m(X- p+) distribution in data
X(1530)0
wj = radic10 P2(cosq)
from Lc+ signal
region
wj = (7 radic2) P4(cosq)
from Lc+ signal
region
Efficiency-corrected
P2 Moment Dist
Efficiency-corrected
P4 Moment DistLc
+ signal
region
spin 32 clearly established
spin 52 ruled out
analysis by establishing J=32
also established positive parity
(ie P-wave)
Spin 52 Test
bull PL moments (L ge 6) give no signal
Spin 32 Test
Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information
13
cosq
L
m(L KS) (GeVc2)
Accumulation of events in KSK+
near threshold evidence of a0(980)+
L KS
a0(980)+
X(1690)0
For J(X[1690]) = 12
Background-subtracted efficiency-corrected
data
― Integrated signal function smeared by mass
resolution [Histogram]
― Signal function with no resolution smearing
― |A(a0(980)|2 contribution
― |A(X(1690)|2 contribution
― Interference term contribution
For the X(1690)0 we obtain
m =16829 plusmn 09(stat)plusmn 08(syst) MeVc2
G = 93-17
+20(stat)plusmn 04(syst) MeV
J =12 favored
14
14
Insight into charm baryon production
Measurements of charm baryon spin from exclusive B decay processes
Insight into light quark spectroscopy from hyperon resonances produced in charm baryon decay
L )2393(c
Lc
cX
0
cW
cW
L )2625(c
L )2880(c
L )2940(c
)2520(c
)2800(c
cX
)2645(cX
)2790(cX
)2815(cX
)2980(cX
)3077(cX
)3055(cX
)3123(cX
15
16
charmonium
Discovery of a narrow width state with mass 31 GeV
discovery of the charm quark
Jy was the first observed cc
bound state
SLAC
ψ(3100)
e+e-rarrhadronspN rarr e+e- X
J
BNL
Jψ resonance
by SLAC
and BNL
PR
L 3
3 1406 (
1974)
PR
L 3
3 1
404 (1
974)
17
JPC = 1- -
B rarr cc K() decay Initial state radiation
Two-photon collision
C= + J= 0 2
Double charmonium
production
Recoil against
Jy C = +18
All charmonium production mechanisms seen at BaBar
The X(3872) a charmonium-like state
in Bplusmn rarr Kplusmn Jψ pp- decays
(PRD77 111101(2008)) opened the
door to exotic meson interpretations BaBar pins down C-parity (+) from
observation of the X in Jy g and
excludes the isovector hypothesis
from lack of evidence for a charged
partner
BaBar discovers the Y(4260) in ISR
e+e- rarr gISR Y(4260) rarr Jψ pp- decays
and the subsequently the Y(4350) in
e+e- rarr gISR Y(4350) rarr ψ(2S) pp-
(PRL95 142001(2006))
Improbable interpretation of both
states as charmonium
Also significant BaBar contributions to
charmonium states seen in double charmonium
production amp 2 photon collisions
(eg gg rarr hc rarr K+ K- p0h [PRD 89 112004 (2014))
Y(4260) rarr Jψ pp-
19
20
bottomonium
CUSB Collaboration
observed bb
bound state
20
21
Opened the doorhellip
over 30 years of discoveries in the Bottomonium Sector
The Search for the hb at BaBar
22
BF measurements
B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4
Compatible with predictions
Combined values of mass and HF splitting
mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)
(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2
The hb(1S) discovered in Y(3S) data
and confirmed in Y(2S) data
S Godfrey JL Rosner
PRD 64 074011 (2001)
hbhb
23
bullResolution dominated
bullSmall Doppler broadening
)2( )2( SPbJ g
Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions
24
Evidence for the hb(1P) in the decay (3S) pohb
bull 10814plusmn 2813 signal events
M(hb) = 9902plusmn4 plusmn2 MeVc2
(CG=989987plusmn027 MeVc2 )
uncertainty from
background fit
background-subtracted result
hb signal
region
PhysRev D84 (2011) 091101
25
PhysRevLett 108 032001 (2012)
hb(2P)
bull Measured hb(12P) mass values consistent with predictions
bull BaBar hb(1P) mass measurement consistent with Bellersquos
bull Observed hb production rate enhancement may be indicative of exotic process violating
HQ spin-flip suppression
hb(1P)
The hb(1P) and hb(2P) seen by Belle
in e+e-rarr pp- transitions at the (5S)
pp- recoil mass spectrum
26
Spectroscopy at J-Lab with 12 GeV
Unique photo-production research
opportunities to identify exotics by
amplitude analyses of final states
hadron spectroscopy by coherent
bremsstrahlung production in Hall D
and by tagged (quasi-)real photoproduction
in Hall B to yield complementary results
Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy
heavy flavor baryon data hellip
COMPASS hadron program is to study the light-quark hadron spectrum and in
particular to search for evidence of hybrids and glueballs (COMPASS confirms
previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)
BESIII continues to make detailed explorations of the region just above the
charmonium threshold
BaBar continues to produce interesting results such as the analysis of BrarrJψ f K
[hep-ex 14077244 recently accepted in PRD] that shows an interesting
structure in m(Jψ f)hellip 27
Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information
Only obvious structure
X (1530)0 rarr X- p+
Lc+ signal region
Rectangular Dalitz plot
Note m2(X- K+) depends linearly on cosqX
12
wj = radic10 P2(cosq)
unweighted
uncorrected
efficiency-corrected unweighted
m(X- p+) distribution in data
X(1530)0
wj = radic10 P2(cosq)
from Lc+ signal
region
wj = (7 radic2) P4(cosq)
from Lc+ signal
region
Efficiency-corrected
P2 Moment Dist
Efficiency-corrected
P4 Moment DistLc
+ signal
region
spin 32 clearly established
spin 52 ruled out
analysis by establishing J=32
also established positive parity
(ie P-wave)
Spin 52 Test
bull PL moments (L ge 6) give no signal
Spin 32 Test
Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information
13
cosq
L
m(L KS) (GeVc2)
Accumulation of events in KSK+
near threshold evidence of a0(980)+
L KS
a0(980)+
X(1690)0
For J(X[1690]) = 12
Background-subtracted efficiency-corrected
data
― Integrated signal function smeared by mass
resolution [Histogram]
― Signal function with no resolution smearing
― |A(a0(980)|2 contribution
― |A(X(1690)|2 contribution
― Interference term contribution
For the X(1690)0 we obtain
m =16829 plusmn 09(stat)plusmn 08(syst) MeVc2
G = 93-17
+20(stat)plusmn 04(syst) MeV
J =12 favored
14
14
Insight into charm baryon production
Measurements of charm baryon spin from exclusive B decay processes
Insight into light quark spectroscopy from hyperon resonances produced in charm baryon decay
L )2393(c
Lc
cX
0
cW
cW
L )2625(c
L )2880(c
L )2940(c
)2520(c
)2800(c
cX
)2645(cX
)2790(cX
)2815(cX
)2980(cX
)3077(cX
)3055(cX
)3123(cX
15
16
charmonium
Discovery of a narrow width state with mass 31 GeV
discovery of the charm quark
Jy was the first observed cc
bound state
SLAC
ψ(3100)
e+e-rarrhadronspN rarr e+e- X
J
BNL
Jψ resonance
by SLAC
and BNL
PR
L 3
3 1406 (
1974)
PR
L 3
3 1
404 (1
974)
17
JPC = 1- -
B rarr cc K() decay Initial state radiation
Two-photon collision
C= + J= 0 2
Double charmonium
production
Recoil against
Jy C = +18
All charmonium production mechanisms seen at BaBar
The X(3872) a charmonium-like state
in Bplusmn rarr Kplusmn Jψ pp- decays
(PRD77 111101(2008)) opened the
door to exotic meson interpretations BaBar pins down C-parity (+) from
observation of the X in Jy g and
excludes the isovector hypothesis
from lack of evidence for a charged
partner
BaBar discovers the Y(4260) in ISR
e+e- rarr gISR Y(4260) rarr Jψ pp- decays
and the subsequently the Y(4350) in
e+e- rarr gISR Y(4350) rarr ψ(2S) pp-
(PRL95 142001(2006))
Improbable interpretation of both
states as charmonium
Also significant BaBar contributions to
charmonium states seen in double charmonium
production amp 2 photon collisions
(eg gg rarr hc rarr K+ K- p0h [PRD 89 112004 (2014))
Y(4260) rarr Jψ pp-
19
20
bottomonium
CUSB Collaboration
observed bb
bound state
20
21
Opened the doorhellip
over 30 years of discoveries in the Bottomonium Sector
The Search for the hb at BaBar
22
BF measurements
B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4
Compatible with predictions
Combined values of mass and HF splitting
mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)
(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2
The hb(1S) discovered in Y(3S) data
and confirmed in Y(2S) data
S Godfrey JL Rosner
PRD 64 074011 (2001)
hbhb
23
bullResolution dominated
bullSmall Doppler broadening
)2( )2( SPbJ g
Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions
24
Evidence for the hb(1P) in the decay (3S) pohb
bull 10814plusmn 2813 signal events
M(hb) = 9902plusmn4 plusmn2 MeVc2
(CG=989987plusmn027 MeVc2 )
uncertainty from
background fit
background-subtracted result
hb signal
region
PhysRev D84 (2011) 091101
25
PhysRevLett 108 032001 (2012)
hb(2P)
bull Measured hb(12P) mass values consistent with predictions
bull BaBar hb(1P) mass measurement consistent with Bellersquos
bull Observed hb production rate enhancement may be indicative of exotic process violating
HQ spin-flip suppression
hb(1P)
The hb(1P) and hb(2P) seen by Belle
in e+e-rarr pp- transitions at the (5S)
pp- recoil mass spectrum
26
Spectroscopy at J-Lab with 12 GeV
Unique photo-production research
opportunities to identify exotics by
amplitude analyses of final states
hadron spectroscopy by coherent
bremsstrahlung production in Hall D
and by tagged (quasi-)real photoproduction
in Hall B to yield complementary results
Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy
heavy flavor baryon data hellip
COMPASS hadron program is to study the light-quark hadron spectrum and in
particular to search for evidence of hybrids and glueballs (COMPASS confirms
previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)
BESIII continues to make detailed explorations of the region just above the
charmonium threshold
BaBar continues to produce interesting results such as the analysis of BrarrJψ f K
[hep-ex 14077244 recently accepted in PRD] that shows an interesting
structure in m(Jψ f)hellip 27
wj = radic10 P2(cosq)
unweighted
uncorrected
efficiency-corrected unweighted
m(X- p+) distribution in data
X(1530)0
wj = radic10 P2(cosq)
from Lc+ signal
region
wj = (7 radic2) P4(cosq)
from Lc+ signal
region
Efficiency-corrected
P2 Moment Dist
Efficiency-corrected
P4 Moment DistLc
+ signal
region
spin 32 clearly established
spin 52 ruled out
analysis by establishing J=32
also established positive parity
(ie P-wave)
Spin 52 Test
bull PL moments (L ge 6) give no signal
Spin 32 Test
Analysis of Lc+ rarr X- p+ K+ to obtain X(1530) spin information
13
cosq
L
m(L KS) (GeVc2)
Accumulation of events in KSK+
near threshold evidence of a0(980)+
L KS
a0(980)+
X(1690)0
For J(X[1690]) = 12
Background-subtracted efficiency-corrected
data
― Integrated signal function smeared by mass
resolution [Histogram]
― Signal function with no resolution smearing
― |A(a0(980)|2 contribution
― |A(X(1690)|2 contribution
― Interference term contribution
For the X(1690)0 we obtain
m =16829 plusmn 09(stat)plusmn 08(syst) MeVc2
G = 93-17
+20(stat)plusmn 04(syst) MeV
J =12 favored
14
14
Insight into charm baryon production
Measurements of charm baryon spin from exclusive B decay processes
Insight into light quark spectroscopy from hyperon resonances produced in charm baryon decay
L )2393(c
Lc
cX
0
cW
cW
L )2625(c
L )2880(c
L )2940(c
)2520(c
)2800(c
cX
)2645(cX
)2790(cX
)2815(cX
)2980(cX
)3077(cX
)3055(cX
)3123(cX
15
16
charmonium
Discovery of a narrow width state with mass 31 GeV
discovery of the charm quark
Jy was the first observed cc
bound state
SLAC
ψ(3100)
e+e-rarrhadronspN rarr e+e- X
J
BNL
Jψ resonance
by SLAC
and BNL
PR
L 3
3 1406 (
1974)
PR
L 3
3 1
404 (1
974)
17
JPC = 1- -
B rarr cc K() decay Initial state radiation
Two-photon collision
C= + J= 0 2
Double charmonium
production
Recoil against
Jy C = +18
All charmonium production mechanisms seen at BaBar
The X(3872) a charmonium-like state
in Bplusmn rarr Kplusmn Jψ pp- decays
(PRD77 111101(2008)) opened the
door to exotic meson interpretations BaBar pins down C-parity (+) from
observation of the X in Jy g and
excludes the isovector hypothesis
from lack of evidence for a charged
partner
BaBar discovers the Y(4260) in ISR
e+e- rarr gISR Y(4260) rarr Jψ pp- decays
and the subsequently the Y(4350) in
e+e- rarr gISR Y(4350) rarr ψ(2S) pp-
(PRL95 142001(2006))
Improbable interpretation of both
states as charmonium
Also significant BaBar contributions to
charmonium states seen in double charmonium
production amp 2 photon collisions
(eg gg rarr hc rarr K+ K- p0h [PRD 89 112004 (2014))
Y(4260) rarr Jψ pp-
19
20
bottomonium
CUSB Collaboration
observed bb
bound state
20
21
Opened the doorhellip
over 30 years of discoveries in the Bottomonium Sector
The Search for the hb at BaBar
22
BF measurements
B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4
Compatible with predictions
Combined values of mass and HF splitting
mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)
(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2
The hb(1S) discovered in Y(3S) data
and confirmed in Y(2S) data
S Godfrey JL Rosner
PRD 64 074011 (2001)
hbhb
23
bullResolution dominated
bullSmall Doppler broadening
)2( )2( SPbJ g
Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions
24
Evidence for the hb(1P) in the decay (3S) pohb
bull 10814plusmn 2813 signal events
M(hb) = 9902plusmn4 plusmn2 MeVc2
(CG=989987plusmn027 MeVc2 )
uncertainty from
background fit
background-subtracted result
hb signal
region
PhysRev D84 (2011) 091101
25
PhysRevLett 108 032001 (2012)
hb(2P)
bull Measured hb(12P) mass values consistent with predictions
bull BaBar hb(1P) mass measurement consistent with Bellersquos
bull Observed hb production rate enhancement may be indicative of exotic process violating
HQ spin-flip suppression
hb(1P)
The hb(1P) and hb(2P) seen by Belle
in e+e-rarr pp- transitions at the (5S)
pp- recoil mass spectrum
26
Spectroscopy at J-Lab with 12 GeV
Unique photo-production research
opportunities to identify exotics by
amplitude analyses of final states
hadron spectroscopy by coherent
bremsstrahlung production in Hall D
and by tagged (quasi-)real photoproduction
in Hall B to yield complementary results
Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy
heavy flavor baryon data hellip
COMPASS hadron program is to study the light-quark hadron spectrum and in
particular to search for evidence of hybrids and glueballs (COMPASS confirms
previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)
BESIII continues to make detailed explorations of the region just above the
charmonium threshold
BaBar continues to produce interesting results such as the analysis of BrarrJψ f K
[hep-ex 14077244 recently accepted in PRD] that shows an interesting
structure in m(Jψ f)hellip 27
cosq
L
m(L KS) (GeVc2)
Accumulation of events in KSK+
near threshold evidence of a0(980)+
L KS
a0(980)+
X(1690)0
For J(X[1690]) = 12
Background-subtracted efficiency-corrected
data
― Integrated signal function smeared by mass
resolution [Histogram]
― Signal function with no resolution smearing
― |A(a0(980)|2 contribution
― |A(X(1690)|2 contribution
― Interference term contribution
For the X(1690)0 we obtain
m =16829 plusmn 09(stat)plusmn 08(syst) MeVc2
G = 93-17
+20(stat)plusmn 04(syst) MeV
J =12 favored
14
14
Insight into charm baryon production
Measurements of charm baryon spin from exclusive B decay processes
Insight into light quark spectroscopy from hyperon resonances produced in charm baryon decay
L )2393(c
Lc
cX
0
cW
cW
L )2625(c
L )2880(c
L )2940(c
)2520(c
)2800(c
cX
)2645(cX
)2790(cX
)2815(cX
)2980(cX
)3077(cX
)3055(cX
)3123(cX
15
16
charmonium
Discovery of a narrow width state with mass 31 GeV
discovery of the charm quark
Jy was the first observed cc
bound state
SLAC
ψ(3100)
e+e-rarrhadronspN rarr e+e- X
J
BNL
Jψ resonance
by SLAC
and BNL
PR
L 3
3 1406 (
1974)
PR
L 3
3 1
404 (1
974)
17
JPC = 1- -
B rarr cc K() decay Initial state radiation
Two-photon collision
C= + J= 0 2
Double charmonium
production
Recoil against
Jy C = +18
All charmonium production mechanisms seen at BaBar
The X(3872) a charmonium-like state
in Bplusmn rarr Kplusmn Jψ pp- decays
(PRD77 111101(2008)) opened the
door to exotic meson interpretations BaBar pins down C-parity (+) from
observation of the X in Jy g and
excludes the isovector hypothesis
from lack of evidence for a charged
partner
BaBar discovers the Y(4260) in ISR
e+e- rarr gISR Y(4260) rarr Jψ pp- decays
and the subsequently the Y(4350) in
e+e- rarr gISR Y(4350) rarr ψ(2S) pp-
(PRL95 142001(2006))
Improbable interpretation of both
states as charmonium
Also significant BaBar contributions to
charmonium states seen in double charmonium
production amp 2 photon collisions
(eg gg rarr hc rarr K+ K- p0h [PRD 89 112004 (2014))
Y(4260) rarr Jψ pp-
19
20
bottomonium
CUSB Collaboration
observed bb
bound state
20
21
Opened the doorhellip
over 30 years of discoveries in the Bottomonium Sector
The Search for the hb at BaBar
22
BF measurements
B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4
Compatible with predictions
Combined values of mass and HF splitting
mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)
(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2
The hb(1S) discovered in Y(3S) data
and confirmed in Y(2S) data
S Godfrey JL Rosner
PRD 64 074011 (2001)
hbhb
23
bullResolution dominated
bullSmall Doppler broadening
)2( )2( SPbJ g
Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions
24
Evidence for the hb(1P) in the decay (3S) pohb
bull 10814plusmn 2813 signal events
M(hb) = 9902plusmn4 plusmn2 MeVc2
(CG=989987plusmn027 MeVc2 )
uncertainty from
background fit
background-subtracted result
hb signal
region
PhysRev D84 (2011) 091101
25
PhysRevLett 108 032001 (2012)
hb(2P)
bull Measured hb(12P) mass values consistent with predictions
bull BaBar hb(1P) mass measurement consistent with Bellersquos
bull Observed hb production rate enhancement may be indicative of exotic process violating
HQ spin-flip suppression
hb(1P)
The hb(1P) and hb(2P) seen by Belle
in e+e-rarr pp- transitions at the (5S)
pp- recoil mass spectrum
26
Spectroscopy at J-Lab with 12 GeV
Unique photo-production research
opportunities to identify exotics by
amplitude analyses of final states
hadron spectroscopy by coherent
bremsstrahlung production in Hall D
and by tagged (quasi-)real photoproduction
in Hall B to yield complementary results
Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy
heavy flavor baryon data hellip
COMPASS hadron program is to study the light-quark hadron spectrum and in
particular to search for evidence of hybrids and glueballs (COMPASS confirms
previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)
BESIII continues to make detailed explorations of the region just above the
charmonium threshold
BaBar continues to produce interesting results such as the analysis of BrarrJψ f K
[hep-ex 14077244 recently accepted in PRD] that shows an interesting
structure in m(Jψ f)hellip 27
Insight into charm baryon production
Measurements of charm baryon spin from exclusive B decay processes
Insight into light quark spectroscopy from hyperon resonances produced in charm baryon decay
L )2393(c
Lc
cX
0
cW
cW
L )2625(c
L )2880(c
L )2940(c
)2520(c
)2800(c
cX
)2645(cX
)2790(cX
)2815(cX
)2980(cX
)3077(cX
)3055(cX
)3123(cX
15
16
charmonium
Discovery of a narrow width state with mass 31 GeV
discovery of the charm quark
Jy was the first observed cc
bound state
SLAC
ψ(3100)
e+e-rarrhadronspN rarr e+e- X
J
BNL
Jψ resonance
by SLAC
and BNL
PR
L 3
3 1406 (
1974)
PR
L 3
3 1
404 (1
974)
17
JPC = 1- -
B rarr cc K() decay Initial state radiation
Two-photon collision
C= + J= 0 2
Double charmonium
production
Recoil against
Jy C = +18
All charmonium production mechanisms seen at BaBar
The X(3872) a charmonium-like state
in Bplusmn rarr Kplusmn Jψ pp- decays
(PRD77 111101(2008)) opened the
door to exotic meson interpretations BaBar pins down C-parity (+) from
observation of the X in Jy g and
excludes the isovector hypothesis
from lack of evidence for a charged
partner
BaBar discovers the Y(4260) in ISR
e+e- rarr gISR Y(4260) rarr Jψ pp- decays
and the subsequently the Y(4350) in
e+e- rarr gISR Y(4350) rarr ψ(2S) pp-
(PRL95 142001(2006))
Improbable interpretation of both
states as charmonium
Also significant BaBar contributions to
charmonium states seen in double charmonium
production amp 2 photon collisions
(eg gg rarr hc rarr K+ K- p0h [PRD 89 112004 (2014))
Y(4260) rarr Jψ pp-
19
20
bottomonium
CUSB Collaboration
observed bb
bound state
20
21
Opened the doorhellip
over 30 years of discoveries in the Bottomonium Sector
The Search for the hb at BaBar
22
BF measurements
B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4
Compatible with predictions
Combined values of mass and HF splitting
mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)
(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2
The hb(1S) discovered in Y(3S) data
and confirmed in Y(2S) data
S Godfrey JL Rosner
PRD 64 074011 (2001)
hbhb
23
bullResolution dominated
bullSmall Doppler broadening
)2( )2( SPbJ g
Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions
24
Evidence for the hb(1P) in the decay (3S) pohb
bull 10814plusmn 2813 signal events
M(hb) = 9902plusmn4 plusmn2 MeVc2
(CG=989987plusmn027 MeVc2 )
uncertainty from
background fit
background-subtracted result
hb signal
region
PhysRev D84 (2011) 091101
25
PhysRevLett 108 032001 (2012)
hb(2P)
bull Measured hb(12P) mass values consistent with predictions
bull BaBar hb(1P) mass measurement consistent with Bellersquos
bull Observed hb production rate enhancement may be indicative of exotic process violating
HQ spin-flip suppression
hb(1P)
The hb(1P) and hb(2P) seen by Belle
in e+e-rarr pp- transitions at the (5S)
pp- recoil mass spectrum
26
Spectroscopy at J-Lab with 12 GeV
Unique photo-production research
opportunities to identify exotics by
amplitude analyses of final states
hadron spectroscopy by coherent
bremsstrahlung production in Hall D
and by tagged (quasi-)real photoproduction
in Hall B to yield complementary results
Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy
heavy flavor baryon data hellip
COMPASS hadron program is to study the light-quark hadron spectrum and in
particular to search for evidence of hybrids and glueballs (COMPASS confirms
previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)
BESIII continues to make detailed explorations of the region just above the
charmonium threshold
BaBar continues to produce interesting results such as the analysis of BrarrJψ f K
[hep-ex 14077244 recently accepted in PRD] that shows an interesting
structure in m(Jψ f)hellip 27
16
charmonium
Discovery of a narrow width state with mass 31 GeV
discovery of the charm quark
Jy was the first observed cc
bound state
SLAC
ψ(3100)
e+e-rarrhadronspN rarr e+e- X
J
BNL
Jψ resonance
by SLAC
and BNL
PR
L 3
3 1406 (
1974)
PR
L 3
3 1
404 (1
974)
17
JPC = 1- -
B rarr cc K() decay Initial state radiation
Two-photon collision
C= + J= 0 2
Double charmonium
production
Recoil against
Jy C = +18
All charmonium production mechanisms seen at BaBar
The X(3872) a charmonium-like state
in Bplusmn rarr Kplusmn Jψ pp- decays
(PRD77 111101(2008)) opened the
door to exotic meson interpretations BaBar pins down C-parity (+) from
observation of the X in Jy g and
excludes the isovector hypothesis
from lack of evidence for a charged
partner
BaBar discovers the Y(4260) in ISR
e+e- rarr gISR Y(4260) rarr Jψ pp- decays
and the subsequently the Y(4350) in
e+e- rarr gISR Y(4350) rarr ψ(2S) pp-
(PRL95 142001(2006))
Improbable interpretation of both
states as charmonium
Also significant BaBar contributions to
charmonium states seen in double charmonium
production amp 2 photon collisions
(eg gg rarr hc rarr K+ K- p0h [PRD 89 112004 (2014))
Y(4260) rarr Jψ pp-
19
20
bottomonium
CUSB Collaboration
observed bb
bound state
20
21
Opened the doorhellip
over 30 years of discoveries in the Bottomonium Sector
The Search for the hb at BaBar
22
BF measurements
B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4
Compatible with predictions
Combined values of mass and HF splitting
mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)
(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2
The hb(1S) discovered in Y(3S) data
and confirmed in Y(2S) data
S Godfrey JL Rosner
PRD 64 074011 (2001)
hbhb
23
bullResolution dominated
bullSmall Doppler broadening
)2( )2( SPbJ g
Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions
24
Evidence for the hb(1P) in the decay (3S) pohb
bull 10814plusmn 2813 signal events
M(hb) = 9902plusmn4 plusmn2 MeVc2
(CG=989987plusmn027 MeVc2 )
uncertainty from
background fit
background-subtracted result
hb signal
region
PhysRev D84 (2011) 091101
25
PhysRevLett 108 032001 (2012)
hb(2P)
bull Measured hb(12P) mass values consistent with predictions
bull BaBar hb(1P) mass measurement consistent with Bellersquos
bull Observed hb production rate enhancement may be indicative of exotic process violating
HQ spin-flip suppression
hb(1P)
The hb(1P) and hb(2P) seen by Belle
in e+e-rarr pp- transitions at the (5S)
pp- recoil mass spectrum
26
Spectroscopy at J-Lab with 12 GeV
Unique photo-production research
opportunities to identify exotics by
amplitude analyses of final states
hadron spectroscopy by coherent
bremsstrahlung production in Hall D
and by tagged (quasi-)real photoproduction
in Hall B to yield complementary results
Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy
heavy flavor baryon data hellip
COMPASS hadron program is to study the light-quark hadron spectrum and in
particular to search for evidence of hybrids and glueballs (COMPASS confirms
previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)
BESIII continues to make detailed explorations of the region just above the
charmonium threshold
BaBar continues to produce interesting results such as the analysis of BrarrJψ f K
[hep-ex 14077244 recently accepted in PRD] that shows an interesting
structure in m(Jψ f)hellip 27
charmonium
Discovery of a narrow width state with mass 31 GeV
discovery of the charm quark
Jy was the first observed cc
bound state
SLAC
ψ(3100)
e+e-rarrhadronspN rarr e+e- X
J
BNL
Jψ resonance
by SLAC
and BNL
PR
L 3
3 1406 (
1974)
PR
L 3
3 1
404 (1
974)
17
JPC = 1- -
B rarr cc K() decay Initial state radiation
Two-photon collision
C= + J= 0 2
Double charmonium
production
Recoil against
Jy C = +18
All charmonium production mechanisms seen at BaBar
The X(3872) a charmonium-like state
in Bplusmn rarr Kplusmn Jψ pp- decays
(PRD77 111101(2008)) opened the
door to exotic meson interpretations BaBar pins down C-parity (+) from
observation of the X in Jy g and
excludes the isovector hypothesis
from lack of evidence for a charged
partner
BaBar discovers the Y(4260) in ISR
e+e- rarr gISR Y(4260) rarr Jψ pp- decays
and the subsequently the Y(4350) in
e+e- rarr gISR Y(4350) rarr ψ(2S) pp-
(PRL95 142001(2006))
Improbable interpretation of both
states as charmonium
Also significant BaBar contributions to
charmonium states seen in double charmonium
production amp 2 photon collisions
(eg gg rarr hc rarr K+ K- p0h [PRD 89 112004 (2014))
Y(4260) rarr Jψ pp-
19
20
bottomonium
CUSB Collaboration
observed bb
bound state
20
21
Opened the doorhellip
over 30 years of discoveries in the Bottomonium Sector
The Search for the hb at BaBar
22
BF measurements
B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4
Compatible with predictions
Combined values of mass and HF splitting
mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)
(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2
The hb(1S) discovered in Y(3S) data
and confirmed in Y(2S) data
S Godfrey JL Rosner
PRD 64 074011 (2001)
hbhb
23
bullResolution dominated
bullSmall Doppler broadening
)2( )2( SPbJ g
Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions
24
Evidence for the hb(1P) in the decay (3S) pohb
bull 10814plusmn 2813 signal events
M(hb) = 9902plusmn4 plusmn2 MeVc2
(CG=989987plusmn027 MeVc2 )
uncertainty from
background fit
background-subtracted result
hb signal
region
PhysRev D84 (2011) 091101
25
PhysRevLett 108 032001 (2012)
hb(2P)
bull Measured hb(12P) mass values consistent with predictions
bull BaBar hb(1P) mass measurement consistent with Bellersquos
bull Observed hb production rate enhancement may be indicative of exotic process violating
HQ spin-flip suppression
hb(1P)
The hb(1P) and hb(2P) seen by Belle
in e+e-rarr pp- transitions at the (5S)
pp- recoil mass spectrum
26
Spectroscopy at J-Lab with 12 GeV
Unique photo-production research
opportunities to identify exotics by
amplitude analyses of final states
hadron spectroscopy by coherent
bremsstrahlung production in Hall D
and by tagged (quasi-)real photoproduction
in Hall B to yield complementary results
Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy
heavy flavor baryon data hellip
COMPASS hadron program is to study the light-quark hadron spectrum and in
particular to search for evidence of hybrids and glueballs (COMPASS confirms
previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)
BESIII continues to make detailed explorations of the region just above the
charmonium threshold
BaBar continues to produce interesting results such as the analysis of BrarrJψ f K
[hep-ex 14077244 recently accepted in PRD] that shows an interesting
structure in m(Jψ f)hellip 27
JPC = 1- -
B rarr cc K() decay Initial state radiation
Two-photon collision
C= + J= 0 2
Double charmonium
production
Recoil against
Jy C = +18
All charmonium production mechanisms seen at BaBar
The X(3872) a charmonium-like state
in Bplusmn rarr Kplusmn Jψ pp- decays
(PRD77 111101(2008)) opened the
door to exotic meson interpretations BaBar pins down C-parity (+) from
observation of the X in Jy g and
excludes the isovector hypothesis
from lack of evidence for a charged
partner
BaBar discovers the Y(4260) in ISR
e+e- rarr gISR Y(4260) rarr Jψ pp- decays
and the subsequently the Y(4350) in
e+e- rarr gISR Y(4350) rarr ψ(2S) pp-
(PRL95 142001(2006))
Improbable interpretation of both
states as charmonium
Also significant BaBar contributions to
charmonium states seen in double charmonium
production amp 2 photon collisions
(eg gg rarr hc rarr K+ K- p0h [PRD 89 112004 (2014))
Y(4260) rarr Jψ pp-
19
20
bottomonium
CUSB Collaboration
observed bb
bound state
20
21
Opened the doorhellip
over 30 years of discoveries in the Bottomonium Sector
The Search for the hb at BaBar
22
BF measurements
B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4
Compatible with predictions
Combined values of mass and HF splitting
mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)
(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2
The hb(1S) discovered in Y(3S) data
and confirmed in Y(2S) data
S Godfrey JL Rosner
PRD 64 074011 (2001)
hbhb
23
bullResolution dominated
bullSmall Doppler broadening
)2( )2( SPbJ g
Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions
24
Evidence for the hb(1P) in the decay (3S) pohb
bull 10814plusmn 2813 signal events
M(hb) = 9902plusmn4 plusmn2 MeVc2
(CG=989987plusmn027 MeVc2 )
uncertainty from
background fit
background-subtracted result
hb signal
region
PhysRev D84 (2011) 091101
25
PhysRevLett 108 032001 (2012)
hb(2P)
bull Measured hb(12P) mass values consistent with predictions
bull BaBar hb(1P) mass measurement consistent with Bellersquos
bull Observed hb production rate enhancement may be indicative of exotic process violating
HQ spin-flip suppression
hb(1P)
The hb(1P) and hb(2P) seen by Belle
in e+e-rarr pp- transitions at the (5S)
pp- recoil mass spectrum
26
Spectroscopy at J-Lab with 12 GeV
Unique photo-production research
opportunities to identify exotics by
amplitude analyses of final states
hadron spectroscopy by coherent
bremsstrahlung production in Hall D
and by tagged (quasi-)real photoproduction
in Hall B to yield complementary results
Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy
heavy flavor baryon data hellip
COMPASS hadron program is to study the light-quark hadron spectrum and in
particular to search for evidence of hybrids and glueballs (COMPASS confirms
previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)
BESIII continues to make detailed explorations of the region just above the
charmonium threshold
BaBar continues to produce interesting results such as the analysis of BrarrJψ f K
[hep-ex 14077244 recently accepted in PRD] that shows an interesting
structure in m(Jψ f)hellip 27
All charmonium production mechanisms seen at BaBar
The X(3872) a charmonium-like state
in Bplusmn rarr Kplusmn Jψ pp- decays
(PRD77 111101(2008)) opened the
door to exotic meson interpretations BaBar pins down C-parity (+) from
observation of the X in Jy g and
excludes the isovector hypothesis
from lack of evidence for a charged
partner
BaBar discovers the Y(4260) in ISR
e+e- rarr gISR Y(4260) rarr Jψ pp- decays
and the subsequently the Y(4350) in
e+e- rarr gISR Y(4350) rarr ψ(2S) pp-
(PRL95 142001(2006))
Improbable interpretation of both
states as charmonium
Also significant BaBar contributions to
charmonium states seen in double charmonium
production amp 2 photon collisions
(eg gg rarr hc rarr K+ K- p0h [PRD 89 112004 (2014))
Y(4260) rarr Jψ pp-
19
20
bottomonium
CUSB Collaboration
observed bb
bound state
20
21
Opened the doorhellip
over 30 years of discoveries in the Bottomonium Sector
The Search for the hb at BaBar
22
BF measurements
B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4
Compatible with predictions
Combined values of mass and HF splitting
mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)
(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2
The hb(1S) discovered in Y(3S) data
and confirmed in Y(2S) data
S Godfrey JL Rosner
PRD 64 074011 (2001)
hbhb
23
bullResolution dominated
bullSmall Doppler broadening
)2( )2( SPbJ g
Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions
24
Evidence for the hb(1P) in the decay (3S) pohb
bull 10814plusmn 2813 signal events
M(hb) = 9902plusmn4 plusmn2 MeVc2
(CG=989987plusmn027 MeVc2 )
uncertainty from
background fit
background-subtracted result
hb signal
region
PhysRev D84 (2011) 091101
25
PhysRevLett 108 032001 (2012)
hb(2P)
bull Measured hb(12P) mass values consistent with predictions
bull BaBar hb(1P) mass measurement consistent with Bellersquos
bull Observed hb production rate enhancement may be indicative of exotic process violating
HQ spin-flip suppression
hb(1P)
The hb(1P) and hb(2P) seen by Belle
in e+e-rarr pp- transitions at the (5S)
pp- recoil mass spectrum
26
Spectroscopy at J-Lab with 12 GeV
Unique photo-production research
opportunities to identify exotics by
amplitude analyses of final states
hadron spectroscopy by coherent
bremsstrahlung production in Hall D
and by tagged (quasi-)real photoproduction
in Hall B to yield complementary results
Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy
heavy flavor baryon data hellip
COMPASS hadron program is to study the light-quark hadron spectrum and in
particular to search for evidence of hybrids and glueballs (COMPASS confirms
previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)
BESIII continues to make detailed explorations of the region just above the
charmonium threshold
BaBar continues to produce interesting results such as the analysis of BrarrJψ f K
[hep-ex 14077244 recently accepted in PRD] that shows an interesting
structure in m(Jψ f)hellip 27
20
bottomonium
CUSB Collaboration
observed bb
bound state
20
21
Opened the doorhellip
over 30 years of discoveries in the Bottomonium Sector
The Search for the hb at BaBar
22
BF measurements
B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4
Compatible with predictions
Combined values of mass and HF splitting
mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)
(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2
The hb(1S) discovered in Y(3S) data
and confirmed in Y(2S) data
S Godfrey JL Rosner
PRD 64 074011 (2001)
hbhb
23
bullResolution dominated
bullSmall Doppler broadening
)2( )2( SPbJ g
Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions
24
Evidence for the hb(1P) in the decay (3S) pohb
bull 10814plusmn 2813 signal events
M(hb) = 9902plusmn4 plusmn2 MeVc2
(CG=989987plusmn027 MeVc2 )
uncertainty from
background fit
background-subtracted result
hb signal
region
PhysRev D84 (2011) 091101
25
PhysRevLett 108 032001 (2012)
hb(2P)
bull Measured hb(12P) mass values consistent with predictions
bull BaBar hb(1P) mass measurement consistent with Bellersquos
bull Observed hb production rate enhancement may be indicative of exotic process violating
HQ spin-flip suppression
hb(1P)
The hb(1P) and hb(2P) seen by Belle
in e+e-rarr pp- transitions at the (5S)
pp- recoil mass spectrum
26
Spectroscopy at J-Lab with 12 GeV
Unique photo-production research
opportunities to identify exotics by
amplitude analyses of final states
hadron spectroscopy by coherent
bremsstrahlung production in Hall D
and by tagged (quasi-)real photoproduction
in Hall B to yield complementary results
Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy
heavy flavor baryon data hellip
COMPASS hadron program is to study the light-quark hadron spectrum and in
particular to search for evidence of hybrids and glueballs (COMPASS confirms
previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)
BESIII continues to make detailed explorations of the region just above the
charmonium threshold
BaBar continues to produce interesting results such as the analysis of BrarrJψ f K
[hep-ex 14077244 recently accepted in PRD] that shows an interesting
structure in m(Jψ f)hellip 27
21
Opened the doorhellip
over 30 years of discoveries in the Bottomonium Sector
The Search for the hb at BaBar
22
BF measurements
B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4
Compatible with predictions
Combined values of mass and HF splitting
mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)
(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2
The hb(1S) discovered in Y(3S) data
and confirmed in Y(2S) data
S Godfrey JL Rosner
PRD 64 074011 (2001)
hbhb
23
bullResolution dominated
bullSmall Doppler broadening
)2( )2( SPbJ g
Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions
24
Evidence for the hb(1P) in the decay (3S) pohb
bull 10814plusmn 2813 signal events
M(hb) = 9902plusmn4 plusmn2 MeVc2
(CG=989987plusmn027 MeVc2 )
uncertainty from
background fit
background-subtracted result
hb signal
region
PhysRev D84 (2011) 091101
25
PhysRevLett 108 032001 (2012)
hb(2P)
bull Measured hb(12P) mass values consistent with predictions
bull BaBar hb(1P) mass measurement consistent with Bellersquos
bull Observed hb production rate enhancement may be indicative of exotic process violating
HQ spin-flip suppression
hb(1P)
The hb(1P) and hb(2P) seen by Belle
in e+e-rarr pp- transitions at the (5S)
pp- recoil mass spectrum
26
Spectroscopy at J-Lab with 12 GeV
Unique photo-production research
opportunities to identify exotics by
amplitude analyses of final states
hadron spectroscopy by coherent
bremsstrahlung production in Hall D
and by tagged (quasi-)real photoproduction
in Hall B to yield complementary results
Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy
heavy flavor baryon data hellip
COMPASS hadron program is to study the light-quark hadron spectrum and in
particular to search for evidence of hybrids and glueballs (COMPASS confirms
previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)
BESIII continues to make detailed explorations of the region just above the
charmonium threshold
BaBar continues to produce interesting results such as the analysis of BrarrJψ f K
[hep-ex 14077244 recently accepted in PRD] that shows an interesting
structure in m(Jψ f)hellip 27
The Search for the hb at BaBar
22
BF measurements
B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4
Compatible with predictions
Combined values of mass and HF splitting
mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)
(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2
The hb(1S) discovered in Y(3S) data
and confirmed in Y(2S) data
S Godfrey JL Rosner
PRD 64 074011 (2001)
hbhb
23
bullResolution dominated
bullSmall Doppler broadening
)2( )2( SPbJ g
Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions
24
Evidence for the hb(1P) in the decay (3S) pohb
bull 10814plusmn 2813 signal events
M(hb) = 9902plusmn4 plusmn2 MeVc2
(CG=989987plusmn027 MeVc2 )
uncertainty from
background fit
background-subtracted result
hb signal
region
PhysRev D84 (2011) 091101
25
PhysRevLett 108 032001 (2012)
hb(2P)
bull Measured hb(12P) mass values consistent with predictions
bull BaBar hb(1P) mass measurement consistent with Bellersquos
bull Observed hb production rate enhancement may be indicative of exotic process violating
HQ spin-flip suppression
hb(1P)
The hb(1P) and hb(2P) seen by Belle
in e+e-rarr pp- transitions at the (5S)
pp- recoil mass spectrum
26
Spectroscopy at J-Lab with 12 GeV
Unique photo-production research
opportunities to identify exotics by
amplitude analyses of final states
hadron spectroscopy by coherent
bremsstrahlung production in Hall D
and by tagged (quasi-)real photoproduction
in Hall B to yield complementary results
Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy
heavy flavor baryon data hellip
COMPASS hadron program is to study the light-quark hadron spectrum and in
particular to search for evidence of hybrids and glueballs (COMPASS confirms
previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)
BESIII continues to make detailed explorations of the region just above the
charmonium threshold
BaBar continues to produce interesting results such as the analysis of BrarrJψ f K
[hep-ex 14077244 recently accepted in PRD] that shows an interesting
structure in m(Jψ f)hellip 27
BF measurements
B((3S) ghb(1S)) = (51 plusmn 07) 10-4 B((2S) ghb(1S)) = (39 plusmn 15) 10-4
Compatible with predictions
Combined values of mass and HF splitting
mhb(1S) = 93909 plusmn 28 MeVc2 (Ghb(1S) 10 MeV)
(m(1S) ndash mhb(1S)) = 693 plusmn 28 MeVc2
The hb(1S) discovered in Y(3S) data
and confirmed in Y(2S) data
S Godfrey JL Rosner
PRD 64 074011 (2001)
hbhb
23
bullResolution dominated
bullSmall Doppler broadening
)2( )2( SPbJ g
Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions
24
Evidence for the hb(1P) in the decay (3S) pohb
bull 10814plusmn 2813 signal events
M(hb) = 9902plusmn4 plusmn2 MeVc2
(CG=989987plusmn027 MeVc2 )
uncertainty from
background fit
background-subtracted result
hb signal
region
PhysRev D84 (2011) 091101
25
PhysRevLett 108 032001 (2012)
hb(2P)
bull Measured hb(12P) mass values consistent with predictions
bull BaBar hb(1P) mass measurement consistent with Bellersquos
bull Observed hb production rate enhancement may be indicative of exotic process violating
HQ spin-flip suppression
hb(1P)
The hb(1P) and hb(2P) seen by Belle
in e+e-rarr pp- transitions at the (5S)
pp- recoil mass spectrum
26
Spectroscopy at J-Lab with 12 GeV
Unique photo-production research
opportunities to identify exotics by
amplitude analyses of final states
hadron spectroscopy by coherent
bremsstrahlung production in Hall D
and by tagged (quasi-)real photoproduction
in Hall B to yield complementary results
Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy
heavy flavor baryon data hellip
COMPASS hadron program is to study the light-quark hadron spectrum and in
particular to search for evidence of hybrids and glueballs (COMPASS confirms
previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)
BESIII continues to make detailed explorations of the region just above the
charmonium threshold
BaBar continues to produce interesting results such as the analysis of BrarrJψ f K
[hep-ex 14077244 recently accepted in PRD] that shows an interesting
structure in m(Jψ f)hellip 27
bullResolution dominated
bullSmall Doppler broadening
)2( )2( SPbJ g
Detailed studies of bottomonium transitions from (3S) events using grarre+e- conversions
24
Evidence for the hb(1P) in the decay (3S) pohb
bull 10814plusmn 2813 signal events
M(hb) = 9902plusmn4 plusmn2 MeVc2
(CG=989987plusmn027 MeVc2 )
uncertainty from
background fit
background-subtracted result
hb signal
region
PhysRev D84 (2011) 091101
25
PhysRevLett 108 032001 (2012)
hb(2P)
bull Measured hb(12P) mass values consistent with predictions
bull BaBar hb(1P) mass measurement consistent with Bellersquos
bull Observed hb production rate enhancement may be indicative of exotic process violating
HQ spin-flip suppression
hb(1P)
The hb(1P) and hb(2P) seen by Belle
in e+e-rarr pp- transitions at the (5S)
pp- recoil mass spectrum
26
Spectroscopy at J-Lab with 12 GeV
Unique photo-production research
opportunities to identify exotics by
amplitude analyses of final states
hadron spectroscopy by coherent
bremsstrahlung production in Hall D
and by tagged (quasi-)real photoproduction
in Hall B to yield complementary results
Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy
heavy flavor baryon data hellip
COMPASS hadron program is to study the light-quark hadron spectrum and in
particular to search for evidence of hybrids and glueballs (COMPASS confirms
previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)
BESIII continues to make detailed explorations of the region just above the
charmonium threshold
BaBar continues to produce interesting results such as the analysis of BrarrJψ f K
[hep-ex 14077244 recently accepted in PRD] that shows an interesting
structure in m(Jψ f)hellip 27
Evidence for the hb(1P) in the decay (3S) pohb
bull 10814plusmn 2813 signal events
M(hb) = 9902plusmn4 plusmn2 MeVc2
(CG=989987plusmn027 MeVc2 )
uncertainty from
background fit
background-subtracted result
hb signal
region
PhysRev D84 (2011) 091101
25
PhysRevLett 108 032001 (2012)
hb(2P)
bull Measured hb(12P) mass values consistent with predictions
bull BaBar hb(1P) mass measurement consistent with Bellersquos
bull Observed hb production rate enhancement may be indicative of exotic process violating
HQ spin-flip suppression
hb(1P)
The hb(1P) and hb(2P) seen by Belle
in e+e-rarr pp- transitions at the (5S)
pp- recoil mass spectrum
26
Spectroscopy at J-Lab with 12 GeV
Unique photo-production research
opportunities to identify exotics by
amplitude analyses of final states
hadron spectroscopy by coherent
bremsstrahlung production in Hall D
and by tagged (quasi-)real photoproduction
in Hall B to yield complementary results
Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy
heavy flavor baryon data hellip
COMPASS hadron program is to study the light-quark hadron spectrum and in
particular to search for evidence of hybrids and glueballs (COMPASS confirms
previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)
BESIII continues to make detailed explorations of the region just above the
charmonium threshold
BaBar continues to produce interesting results such as the analysis of BrarrJψ f K
[hep-ex 14077244 recently accepted in PRD] that shows an interesting
structure in m(Jψ f)hellip 27
PhysRevLett 108 032001 (2012)
hb(2P)
bull Measured hb(12P) mass values consistent with predictions
bull BaBar hb(1P) mass measurement consistent with Bellersquos
bull Observed hb production rate enhancement may be indicative of exotic process violating
HQ spin-flip suppression
hb(1P)
The hb(1P) and hb(2P) seen by Belle
in e+e-rarr pp- transitions at the (5S)
pp- recoil mass spectrum
26
Spectroscopy at J-Lab with 12 GeV
Unique photo-production research
opportunities to identify exotics by
amplitude analyses of final states
hadron spectroscopy by coherent
bremsstrahlung production in Hall D
and by tagged (quasi-)real photoproduction
in Hall B to yield complementary results
Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy
heavy flavor baryon data hellip
COMPASS hadron program is to study the light-quark hadron spectrum and in
particular to search for evidence of hybrids and glueballs (COMPASS confirms
previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)
BESIII continues to make detailed explorations of the region just above the
charmonium threshold
BaBar continues to produce interesting results such as the analysis of BrarrJψ f K
[hep-ex 14077244 recently accepted in PRD] that shows an interesting
structure in m(Jψ f)hellip 27
Spectroscopy at J-Lab with 12 GeV
Unique photo-production research
opportunities to identify exotics by
amplitude analyses of final states
hadron spectroscopy by coherent
bremsstrahlung production in Hall D
and by tagged (quasi-)real photoproduction
in Hall B to yield complementary results
Many new results from the LHC spectroscopy of X Y Z states bottomonium spectroscopy
heavy flavor baryon data hellip
COMPASS hadron program is to study the light-quark hadron spectrum and in
particular to search for evidence of hybrids and glueballs (COMPASS confirms
previous Brookhaven discovery of the π1(1600) 1-+ wave in rp)
BESIII continues to make detailed explorations of the region just above the
charmonium threshold
BaBar continues to produce interesting results such as the analysis of BrarrJψ f K
[hep-ex 14077244 recently accepted in PRD] that shows an interesting
structure in m(Jψ f)hellip 27