B D () D () K Jolanta Brodzicka, Henryk Palka INP Krakow B G M December 08 , 2004

B B D D(*)(*)DD(*)(*)KK

Jolanta Brodzicka, Henryk PalkaJolanta Brodzicka, Henryk Palka INP KrakowINP Krakow

BBGGMMDecemberDecember 0808, , 20042004

Outline :Outline :

OnOn B B D D(*)(*)DD(*)(*)KK for for 250fb250fb-1-1

On DOn DsJsJ(2700) (2700)

Changes since last BAMChanges since last BAM

J.BrodzickaJ.Brodzicka, , H.H.PaPallkaka INP Krakow BINP Krakow BGGM M DecemDecember ber 0808, 2004, 2004

Full data sample re-skimmed because:Full data sample re-skimmed because:

low efficiency in Dlow efficiency in DKK00 modes has been noticedmodes has been noticed

inconsistent IP cuts for svd1 and svd2 datainconsistent IP cuts for svd1 and svd2 data

Improvements obtained: Improvements obtained:

new B new B D D(*)(*)DD(*)(*)KK channelschannels observed observed

colour suppressed and usefull for CPV colour suppressed and usefull for CPV

S/B increaseS/B increase

DDsJsJ(2700) (2700) D D00KK+ + : conclusions remain valid: conclusions remain valid

BB++ D D--DD++KK++ BB00 D D--DD++KK00SS

BB++ D D**--DD++KK++ BB00 D D**--DD++KK00SS

BB++ D D**--DD*+*+KK+ + BB00 D D**--DD*+*+KK00SS (shown last year)(shown last year)

11st st observationobservation11st st observationobservation

11st st observationobservation

BB++ D D--DD++KK++

S = S = 4545..66 ±± 8.58.5

stat signif = 8.0stat signif = 8.0

N/7

MeV for Mbc>5.273 GeV for E<15MeV

N/2

.5M

eV


BB++ D D**--DD++KK++

S = S = 7373..55 ±± 9.99.9


N/7

MeV

for Mbc>5.273 GeV for E<30MeV

N/2

.5M

eV

colour suppressed decayscolour suppressed decays

BB++ D D**--DD*+*+KK++ S = S = 1111..99 ±± 3.63.6


N/7

MeV

E

for Mbc>5.27 GeV

Mbc

for E<25MeV

N/2

.5M

eV



2-2-dimdim M Mbc bc vs.vs. E unbinnedE unbinned likelihoodlikelihood fitfit used used

S = S = 6060..44 ±± 9.59.5


N/7

MeV

E Mbc

for E<30MeV for Mbc >5.273 GeV

N/2

.5M

eV


BB00 D D**--DD++KK00SS

modes interesting for CPVmodes interesting for CPV

N/7

MeV

S = S = 1414..77 ±± 3.93.9


for E<25MeV for Mbc >5.27 GeV

N/2

.5M

eV BB00 D D**--DD*+*+KK00

SS

S = 38.S = 38.00 ±± 8.18.1


N/7

MeV for E<15MeV for Mbc >5.273 GeV

N/2

.5M

eV BB00 D D--DD++KK00

SS



ModeSignal

for 250fb-1eff [ 10-4 ]

BF [ 10-3 ]

for 250fb-1

B+ D0D0K+ 151.5 ± 18.0

4.88 ± 0.151.13 ± 0.13 ±

0.14

B0 D-D0K+ 208.5 ± 19.0

10.10 ± 0.41

0.75 ± 0.07 ± 0.10

B+ D-D+K+ 45.6 ± 8.5 4.93 ± 0.310.34 ± 0.06 ±

x.xx

B0 D-D+K0s 38.0 ± 8.1 2.86 ± 0.180.48 ± 0.10 ±

x.xx

B+ D*-D0K+ 218.1 ± 17.8

2.55 ± 0.053.11 ± 0.35 ±

0.48

B+ D0D*+K0s

52.6 ± 9.1 0.86 ± 0.022.22 ± 0.56 ±

0.29

Preliminary

L_Sig(L_Sig(MMbc, bc, E)E) = = SS••((G (G (MMbcbc))••G(G(E)E)) + ) + SS••(G((G(MMbcbc))••G(G(E)E))) + +

SS22••(G((G(MMbcbc))••G(G(E)E)))22

L_Bckg (L_Bckg (MMbc, bc, E)E) = B = B••ARG (ARG (MMbcbc) ) •• POL_2 ( POL_2 (EE)) L= L_Sig + L_Bckg L= L_Sig + L_Bckg SS , , SS22 : regions: regions with missing with missing ,2,2

BB++ D D00DD00KK++ S = S = 151151..55 ±± 18.018.0

S = S = 208208..55 ±± 19.019.0

SS/B=0./B=0.7 7

SS/B=0.5/B=0.544

N/2

.5M

eV

N/7

MeV

E

for Mbc >5.273 GeV

N/2

.5M

eV

Mbc

for E<15MeV

Mbc

for E<15MeV N

/7M

eV

E

for Mbc >5.273 GeV


BB00 D D--DD00KK++

N/2

.5M

eV

Fitting method: Fitting method: 2-2-dimdim M Mbc bc vs.vs. E unbinned E unbinned likelihoodlikelihood fit fit

(4160)(4160)

(3770)(3770)

DDsJsJ(2573)(2573) DDsJsJ(2700)(2700)

for signal-box eventsfor signal-box events : : Dalitz plot and projections for Dalitz plot and projections for

Background:Background: ellielliptical strip ptical strip 66 to to 1010

in in MbcMbc, , EE, surrounding the signal region, surrounding the signal region

BB++ D D00DD00KK++

Mbc > 5.273 GeV Mbc > 5.273 GeV EE<15 MeV (~3<15 MeV (~3 ) )

LR > 0.04LR > 0.04

(3770)(3770)(4160)(4160)

(4040)(4040)

DDsJsJ(2573)(2573)

DDsJsJ(2700)(2700) (3770)(3770) reflectionreflection

(4160) reflection(4160) reflection

M2( D0K+ )

M( D0 K+ )

N /

20

MeV

N /

20

MeV

M( D0D0 )

M( D0K+ )

M2(

D0D

0 )

N /

20

MeV

DDsJsJ(2700)(2700) reflectionreflection

(3770)(3770) reflectionreflection

(4160)(4160) reflection reflection



Background subtracted mass distributionsBackground subtracted mass distributions2dim 2dim MMbc bc vs.vs. E E fit fitss in in inv. massinv. mass bins bins B signal in mass bins

Sig

nal /

50M

eV

BB++ D D00DD00KK++

M( D0D0 ) M( D0K+ )

wrong flavour comb.wrong flavour comb.

Sig

nal /

50M

eV

Sig

nal /

50M

eV

M( D0K+ )

(4160)(4160)(3770)(3770)

DDsJsJ(2700)(2700)


Can we explainCan we explain M( D0K+ ) distributionsdistributionsby by reflections from knownreflections from known states? states?

Assumption: only (4160) in M( D0D0 ) distr. @ 4GeV region

M( D0D0 )

Sig

nal /

50M

eV

N = N = 5 54.4 ± 14.4 ± 100..88M = M = 41604160 MeV MeV fixedfixed = = 80 80 MeV MeV fixed fixed

does not explain M( D0K+ ) bump at 2.7GeV

M( D0K+ )

Sig

nal /

50M

eV

Sig

nal /

50M

eV

Sig

nal /

50M

eV N = N = 69.8 ± 11.569.8 ± 11.5

M = M = 41410000 MeV MeV fixedfixed = = 101000 MeV MeV fixed fixed

(4160) reflection


CharmoniaCharmonia

M(D0D0) for M(D0K+) > 2.97GeV

(4160) (4160) inin ½ helicity distr. 14.8 ± 6.4 events

To estimate of the (4160)(4160) contribution to the 2.7GeV peak:

((3773770) 0)

total total (4160) yield(4160) yield:: 2 27 ±7 ± 11 11 eventsevents(for 2nd half helicity distr: 20% smaller eff )(for 2nd half helicity distr: 20% smaller eff )

(4160)(4160)

Sig

nal /

50

MeV

M( D0D0 )

Sig

nal /

25

MeV

M( D0D0 )

N = N = 34.9 ± 7.234.9 ± 7.2M = 3778 MeVM = 3778 MeV fixedfixed = = 25.3 MeV 25.3 MeV fixed fixed

• rresonance described by non-relativistic Breit-Wigneresonance described by non-relativistic Breit-Wigner

• nonresonant component nonresonant component – threshold function– threshold function

M = M = 41416600 MeV MeV fixedfixed = = 8800 MeV MeV fixed fixed

(other fit variants checked)

contribution to the DDsJsJ(2700): 12 events(2700): 12 events


N = 70.0 ± 12.2N = 70.0 ± 12.2M = 271M = 27166 ± ± 1313 MeV MeV = = 13130 ± 0 ± 331 MeV 1 MeV

DDsJsJ(2700) (2700)

fitted B Signal

BB++ D D00DD00KK++

Sig

nal /

50

MeV

M( D0K+ )

reflection from (4160) (4160) (normalized to 27) (+ non-resonant component ) (interference effects – neglected)

(3770) (3770) region removed:

M(D0D0)>3845 MeV

Fit to background-free Fit to background-free D0K+ mass spectrmass spectrumum• rresonance described by non-relativistic Breit-Wigneresonance described by non-relativistic Breit-Wigner• Phase Space Phase Space (nonresonant component) is described by 3body MC PS (nonresonant component) is described by 3body MC PS • Reflection shape: (according to cosReflection shape: (according to cos22 angular di angular distribution of stribution of (4160)(4160) ) ) from MC : from MC : BB++ (4160)(4160) KK++

systematic error systematic error from from (4160) param.:(4160) param.: N: ± 4N: ± 4 M: ± 2 MeVM: ± 2 MeV : +3 -10 MeV: +3 -10 MeV


(4160) 27 ± 12 M=4160 =80MeV

(3770) 35 ± 7 M=3770 =25MeV

DsJ(2700) 70 ± 12 M=2700 =140MeV

wrong flavour comb.wrong flavour comb.Contributions from considered states:(normalized to yields)

(shapes from MC studies)

Sig

nal /

50M

eV

BB++ D D00DD00KK++

M( D0D0 )

M( D0K+ )

Sig

nal /

50M

eV

Sig

nal /

50M

eV M( D0K+ )

Explanation ofExplanation of mass spectramass spectra

(plotted by adding)

spin spin J=1J=1 assumed for assumed for DsJ(2700)DsJ(2700)


J=1 hypothesis /n.d.f = 0.1/4J=2 hypothesis/n.d.f = 8.1/4J=0 hypothesis/n.d.f = 16/4

Angular distribution Angular distribution Helicity angle Helicity angle : : angle between angle between KK++ momentum inmomentum in D D00KK++ rest frame rest frame

and and DD00KK++ momentum (the boost direction) in B rest framemomentum (the boost direction) in B rest frame

DD0K+

D0

K+

B

coscos distribution obtained using distribution obtained using

2-dim 2-dim MMbc bc vs.vs. E E fit in fit in each coseach cos bin bin (to subtract background)(to subtract background)

fitted fitted B B Signal (corrected for acceptance)Signal (corrected for acceptance)

coscos

Eff

. corr

ecte

d s

ign

al

Eff

. corr

ecte

d s

ign

al Acceptance for signal MCAcceptance for signal MC

BB+ + D D0 0 DDsJsJ(2720)(2720) (K)(K) For DDsJsJ(2720)(2720) J=1 assumedJ=1 assumedAng.distribution: Ang.distribution: coscos22

coscos

Accep

tan

ce

Accep

tan

ce

(4160) reflection

DDsJsJ (2700) region:(2700) region: B B++ D D00DD00KK+ + signal-box signal-box

2.58 < M(D2.58 < M(D00KK++) < 2.84 GeV () < 2.84 GeV (130MeV window )130MeV window )


Angular distribution of Angular distribution of K+D0D0

D0

D0

BHelicity angle Helicity angle : : angle between angle between DD00 momentum inmomentum in D D00DD00 rest frame rest frame

and and DD00DD00 momentum in B rest framemomentum in B rest frame

(4160) region:(4160) region: BB++ D D00DD00KK+ + signal-box signal-box 4.0 < M(D4.0 < M(D0 0 DD00) < 4.2 GeV () < 4.2 GeV (100MeV window )100MeV window )

Eff

. corr

ecte

d s

ign

al

Eff

. corr

ecte

d s

ign

al

coscosDsJ(2700)reflection

coscos distribution obtained using distribution obtained using 2-dim 2-dim MMbc bc vs.vs. E E fit in fit in each coseach cos

binbin (to subtract background)(to subtract background) (3770) region:(3770) region:

BB++ D D00DD00KK+ + signal-box signal-box 3.7 < M(D3.7 < M(D0 0 DD00) < 3.845 GeV ) < 3.845 GeV ((33 ) )

Eff

. corr

ecte

d s

ign

al

Eff

. corr

ecte

d s

ign

al

coscos


DDsJsJ(2700) (2700) DDsJsJ(2573)(2573)

Dalitz plot and projectionsDalitz plot and projections BB00 D D--DD00KK++ M

2(

D0D

- )

M2( D0K+ )

M( D-K+ )

M( D-D0 )

for signal-box events :for signal-box events : Mbc > 5.273 GeV E<18 MeV (~3 )

N /

20

MeV

N /

20

MeV

LR > 0.01LR > 0.01

M( D0K+ )

N /

20

MeV DDsJsJ(2700)(2700)

DDsJsJ(2573)(2573)

BackgroundBackground normalized normalized to to number of bckgd. number of bckgd. events in events in signal boxsignal box




BBackground subtracted mass distributionsackground subtracted mass distributions2dim 2dim MMbc bc vs.vs. E E fit fitss in in inv. massinv. mass bins bins B signal in mass bins

BB00 D D--DD00KK++

M( D0K+ )

Sig

nal /

50M

eV

M( D-K+ )M( D-D0 )

Sig

nal /

50M

eV

Sig

nal /

50M

eV

•DDsJsJ(2700) (2700) observedobserved and a shoulder ( and a shoulder (DDsJsJ(2573) (2573) ?)?)


• rresonances described by non-relativistic Breit-Wigneresonances described by non-relativistic Breit-Wignerss• DDsJsJ(2573)(2573) the convolutionthe convolution BW BW G( G(=50MeV)=50MeV) • Phase Space Phase Space (nonresonant component) is described by 3body MC PS (nonresonant component) is described by 3body MC PS

Fit to background-free Fit to background-free D0K+ mass spectrmass spectrumum

fitted B Signal

N = N = 121222..4 ± 17.94 ± 17.9M = 2710 ± 9 MeVM = 2710 ± 9 MeV = = 1127 ± 27 MeV 27 ± 27 MeV

N = 12.6 ± 4.0 N = 12.6 ± 4.0 M = 25M = 257373 MeV MeV fixedfixed = 15 MeV fixed= 15 MeV fixed

DDsJsJ(2700) (2700) DDsJsJ(2573)(2573)

BB0 0 D D--DD00KK++

Sig

nal /

50

MeV

M( D0K+ )


DsJ(2573) 13 ± 4 M=2573 =15MeV

DsJ(2700) 122 ± 18 M=2700 =140MeV

Sig

nal /

50M

eV

BB00 D D--DD00KK++


Sig

nal /

50M

eV

Sig

nal /

50M

eV M( D0K+ ) M( D-D0 )

M( D-K+ )


Contributions from considered states:(normalized to yields)

(shapes from MC studies) (plotted by

adding)



Angular distribution Angular distribution

DDsJsJ (2700) region:(2700) region: B B0 0 D D--DD00KK+ + signal-box signal-box

2.58 < M(D2.58 < M(D00KK++) < 2.84 GeV () < 2.84 GeV (130MeV window )130MeV window )

fitted fitted B B Signal (corrected for acceptance)Signal (corrected for acceptance)

BB0 0 D D--DD00KK++

coscos

coscos

Acceptance for signal MCAcceptance for signal MC BB0 0 D D-- DDsJsJ(2700)(2700) (K)(K)For DDsJsJ(2700)(2700) J=1 assumedJ=1 assumedE

ff.

corr

ecte

d s

ign

al

Eff

. corr

ecte

d s

ign

al

Accep

tan

ce

Accep

tan

ce


Summary Summary


results shown at last BAM confirmed with reanalised dataresults shown at last BAM confirmed with reanalised data

new channels observed ( 3 of them for the first time)new channels observed ( 3 of them for the first time)

publish result on publish result on DDsJsJ(2700)(2700) in B in B++ D D00DD00KK++

publish BF’spublish BF’s

write PhD thesiswrite PhD thesis

Plan Plan

Backup slidesBackup slides



ModeSignal

for 140fb-1

eff [ 10-

4 ]BF [ 10-3 ]

for 140fb-1

B+ D0D0K+ 92.6 ± 12.64.89 ± 0.13

1.25 ± 0.17 ± 0.19

B0 D-D0K+ 126.9 ± 15.3

9.70 ± 0.39

0.86 ± 0.10 ± 0.12

B+ D*-D0K+

120.9 ± 13.4 2.50 ±

0.073.19 ± 0.35 ±

0.49

B+ D0D*+K0s

24.5 ± 6.40.89 ± 0.04

1.53 ± 0.38 ± 0.20

E Mbc


BB00 D D**--DD00KK++

BB-- D D00DD**--KK00SS

S = S = 218218..11 ±± 17.817.8

S = S = 5252..66 ±± 9.19.1

SS/B=/B=1.3 1.3

SS/B=/B=1.0 1.0

selection cutsselection cuts accepted events : R2< 0.3

tracks : IP_dz< 5cm IP_dr< 0.4cm

K± : P(K/) > 0.4 ± : P(/K) > 0.1 electron veto: el_id < 0.95

K0S : M(+ -) - MKs <15MeV only good K0

s accepted

0 : E >50 MeV M( ) -M0 <15MeV

DD(**) reconstructionreconstruction D0 K, K3, K0, Ks, KK BF ~ 28% of total

D± K, Ks, KK, KsK BF ~ 12% of total

M(D)-M(DPDG) < 20MeV ( D0 K0 : -50MeV )

vertex fit (cl > 0.) and mass constraint fit applied p(D) < 2 GeV in (4S) system

D(*) ± D0 ± M(D*)-M(D)-mPDG) < 2.5MeV vertex fit (cl > 0.)

BB DD(**)DD(**)KK reconstruction reconstruction B vertex fit: with IP and B constraints

Mbc > 5.2 GeV -0.40 < E < 0.35 GeV

AnalysisAnalysis method method


Likelihood ratios:Likelihood ratios:

D probabilities (D probabilities ( LRLR_D _D ):):

LR_D ( MLR_D ( MD D ))= B(MB(MDD))

S(MS(MDD))

S(MS(MDD))++

S(MD), B(MD) parameterization from fits to data ( inclusively reconstructed D0, D± in each decay mode separately )

D plots for ~11fb-1 after preselection

p(D) < 2GeV in (4S) system

MMDD

DD00 K3K3

MMDD

DD00 K K

LR_DLR_D

MMDD

DD00 KK00 LR_DLR_D

LR_DLR_D

MMDD

DD±± KK

LR_DLR_D

MMDD

DD±± KKss

LR_DLR_D


LR_B vs. M(DLR_B vs. M(D11)*M(D)*M(D22) ) for signal box-events for signal box-events ::

BB++ D D00DD00KK++

LR

_B

M_DM_D00 * M_D * M_D00

BB00 D D--DD00KK++

M_DM_D00 * M_D * M_D--

LR

_B

B probability ( LR_B )B probability ( LR_B ):: LR_B = LR_DLR_B = LR_D11 ××

LR_DLR_D22

LR_BLR_B used for used for:: choice of best B candidatechoice of best B candidate ((withwith max max LR_BLR_B)) background discriminationbackground discrimination


LR_B cutLR_B cut(( good for background reduction good for background reduction and S/B improvementand S/B improvement ))

S /

sq

rt (

S +

B )

S /

sq

rt (

S +

B )

Signal MCSignal MC

Background:Background: M Mbcbc sideband sideband

LR_DLR_D00 * LR_D * LR_D00 cutcut

no LR_B cut

LR_B > 0.04

LR_B > 0.1

EE

for Mbc>5.27GeV

DataData

B+ D0D0K+

Signal MCSignal MC BF = 1.5 * 10 BF = 1.5 * 10-3-3 B+ D0D0K+ B+ D0D0K+

B+ D0D0K+ for for 25250fb0fb-1-1


M(D0D0) for M(D0K+) > 2.97GeV ( ≡ ½ of the (4160)(4160) helicity distr.)

(4160) fit variants(4160) fit variants

M( D0D0 )

Sig

nal /

50M

eV

M( D0D0 )

Sig

nal /

50M

eV

N = N = 23.4 ± 7.123.4 ± 7.1M = M = 41410000 MeV MeV fixedfixed = = 101000 MeV MeV fixed fixed

42 ± 1342 ± 13

N = N = 17.3 ± 7.017.3 ± 7.0M = M = 41416600 MeV MeV fixedfixed = = 101000 MeV MeV fixed fixed

31 ± 1331 ± 13

total total (4160) (4160) yieldyield

total total (4160) (4160) yieldyield

N = N = 66.3 ± 12.166.3 ± 12.1M = 2717 ± 14 M = 2717 ± 14 MeVMeV = = 133133 ± 33 MeV± 33 MeV

Sig

nal /

50M

eV

M( D0K+ )J.BrodzickaJ.Brodzicka, , H.H.PaPallkaka INP Krakow BINP Krakow BGGM M DecemDecember ber 0808, 2004, 2004

no no (4160) contribution (4160) contribution to the 2.7GeV peak:

N = N = 72.9 ± 11.772.9 ± 11.7M = 2714 ± 10 MeVM = 2714 ± 10 MeV = = 120 ± 26 MeV 120 ± 26 MeV

DDsJsJ(2700)(2700)

M( D0K+ )

Sig

nal /

50M

eV


(4160) 42 ± 13 M=4100 =100MeV

(3770) 35 ± 7 M=3770 =25MeV

DsJ(2700) 66 ± 12 M=2700 =140MeV

wrong flavour comb.wrong flavour comb.Contributions from considered states:(normalized to yields)


Sig

nal /

50M

eV

BB++ D D00DD00KK++

M( D0D0 )

M( D0K+ )

Sig

nal /

50M

eV

Sig

nal /

50M

eV M( D0K+ )


(plotted by adding)


(4160) gen. with: M=4100MeV =100MeV


Sig

nal /

50M

eV

BB++ D D00DD00KK++

M( D0D0 )

M( D0K+ )

Sig

nal /

50M

eV

Sig

nal /

50M

eV M( D0K+ )

Explanation ofExplanation of mass spectramass spectra spin spin J=0J=0 assumed for assumed for DsJ(2700)DsJ(2700)



(plotted by adding)

(4160) 27 ± 12 M=4160 =80MeV

(3770) 35 ± 7 M=3770 =25MeV

DsJ(2700) 70 ± 12 M=2700 =140MeV


(4160) 27 ± 12 M=4160 =80MeV

(3770) 35 ± 7 M=3770 =25MeV

DsJ(2700) 70 ± 12 M=2700 =140MeV

Sig

nal /

50M

eV

BB++ D D00DD00KK++

M( D0D0 )

M( D0K+ )

Sig

nal /

50M

eV

Sig

nal /

50M

eV M( D0K+ )

Explanation ofExplanation of mass spectramass spectra spin spin J=2J=2 assumed for assumed for DsJ(2700)DsJ(2700)



(plotted by adding)


Sig

nal /

50M

eV

BB00 D D--DD00KK++


Sig

nal /

50M

eV

Sig

nal /

50M

eV M( D0K+ ) M( D-D0 )

M( D-K+ )




(plotted by adding)


DsJ(2573) 13 ± 4 M=2573 =15MeV

DsJ(2700) 122 ± 18 M=2700 =140MeV


DsJ(2573) 13 ± 4 M=2573 =15MeV

DsJ(2700) 122 ± 18 M=2700 =140MeV

Sig

nal /

50M

eV

BB00 D D--DD00KK++


Sig

nal /

50M

eV

Sig

nal /

50M

eV M( D0K+ ) M( D-D0 )

M( D-K+ )



(shapes from MC studies) (plotted by adding)



Angular distributions uncorrected for acceptanceAngular distributions uncorrected for acceptance fitted fitted B B SignalSignal

coscoscoscos

DDsJsJ (2700) region:(2700) region: B B DD DD00KK+ + signal-box signal-box

2.58 < M(D2.58 < M(D00KK++) < 2.84 GeV ) < 2.84 GeV

BB++ D D00DD00KK++ BB0 0 D D--DD00KK++


Efficiency map Efficiency map BB++ D D00DD00KK++

M2(

D0D

0 )

M2( D0K+ )

Efficiency [‰]


B B D D((**))DD((**))KK : good place to explore spectroscopy: : good place to explore spectroscopy:

b b cW cW -- c c s c c s ++ dd (uu) dd (uu) DD((**)) K from W vertexK from W vertex

BB0 0 D D--DD00KK++

Physics motivations Physics motivations

Leading quark diagrams:Leading quark diagrams:

only External diagramonly External diagram DD00KK++ is theis the only only non-exotic comb., non-exotic comb., DD**--DD0 0 have > 2q contenthave > 2q content

BB++ D D00DD00KK++

External + Internal diagrams External + Internal diagrams Both DK and DDBoth DK and DD states expected states expected DD00KK++ is exotic is exotic

_

BB0 0 D* D*--DD00KK++


Documents

B D (*) D (*) K Jolanta Brodzicka, Henryk Palka INP Krakow B G M December 08 , 2004

B D () D () K Jolanta Brodzicka, Henryk Palka INP Krakow B G M December 08 , 2004