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Future studies of Transverse Momentum Dependent (TMD) functions. Delia Hasch. Symmetry and Spin 2005 Advanced Studies Institute, Praha (CZ), Jul 27-Aug 03. new class of FF more functions @twist-3 … manifest in azimuthal/SSA/ l-r asymmetries. - PowerPoint PPT Presentation
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Future studies of Future studies of Transverse Momentum Transverse Momentum
Dependent (TMD) functionsDependent (TMD) functions
Delia Hasch
Symmetry and Spin 2005 Advanced Studies Institute, Praha (CZ), Jul 27-Aug
03
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55LTw2Corr Sγγ)(qγ)(qS)(q
2
1)(
add kT dependent DF :
transversity
___ Delia Hasch______ Future TMD measurements _____________ Symmetry and Spin 2005 _______ Praha (CZ), 01-08-05
Sivers
Boehr
Mulders
new class of FF
more functions @twist-3 …manifest in azimuthal/SSA/ l-r asymmetries
observablesobservables
pp eesidis
DY, ATT incl. jets
Xhpp
leftright
AN
jet correlations,
…
X(h)hepl
AUT(±S),
AUL(), ALU()AUU(), …production, VM, …
, ALT(±S)
DF FF
e-
e+
Collins FFIFFunpol FF
___ Delia Hasch______ Future TMD measurements _____________ Symmetry and Spin 2005 _______ Praha (CZ), 01-08-05
ALT
beam target
observables observables experimentsexperiments
pp eesidis
@6GeV
(very) far future PAX@GSI JLab@12GeV EIC
future TMD pp sidis ee
measurements RHIC PAX HERMES COMPASS JLab EIC BELLE
summary
@RHIC:
@DESY
@CERN
@KEK
future TMD pp sidis ee
measurements RHIC PAX HERMES COMPASS JLab EIC BELLE
summary
higher twist
Sivers effect
Collins effect
contributions:
TMDs @RHIC TMDs @RHIC
Xhpp
leftright
Fermilab E704: √s ~20 GeV
future TMD pp sidis ee
measurements RHIC PAX HERMES COMPASS JLab EIC BELLE
summary
TMDs @RHIC TMDs @RHIC
Xhpp
leftright
Fermilab E704: √s ~20 GeV RHIC: √s ~200 GeV
future TMD pp sidis ee
measurements RHIC PAX HERMES COMPASS JLab EIC BELLE
summary
TMDs @RHIC TMDs @RHIC
Xhpp
leftright
Fermilab E704: √s ~20 GeV RHIC: √s ~200 GeV
map kinematic dependencies xF, PT
hadron ID: 0, K, p
with current data set till 2005 (<Pb>~0.45):
new observables to disentangle
different mechanism:
AT with 32pb-1
future:future: TMDs @RHIC TMDs @RHIC
2 1 jetjetpp azimuthal back to back correlation betweenhadrons in opposite hemisphere jets:
clean channel for Sivers effect
analysis of jet structure:
isolate Collins effect 2hadron interference
Xjet)(ππpp
ll pp DY, inclusive jets:
direct access to h1
30-100 pb-1
Pb ≥ 0.5
1-30 pb-1
Pb = 0.5
0.1-1 fb-1
Pb ≥ 0.7
silicon tracker
FMS
future TMD pp sidis ee
measurements RHIC PAX HERMES COMPASS JLab EIC BELLE
summary
Future:Future: Drell Yan p p Drell Yan p p @GSI @GSI
spin-transfer from polarized electrons of the target to antiprotons
)M,q(x)M,q(xe
)M,(xh)M,(xhe
adσdσ
dσdσA
22
q
21
2q
22
q1
q
21
q1
2q
TTTT
GSI: s~30-50 GeV2 =x1x2=M2/s~0.2-0.3
exploration of valence quarks (h1
q(x,Q2) large)
RHIC: =x1x2=M2/s~10-3
exploration of the sea quark ATT very small (~ 1 %)
TT
TT
a
A
T=22 GeV (s=6.7 GeV)
T=15 GeV(s=5.7 GeV)
Anselmino et al. PLB 594,97
(2004)
xF=x1-x2
future TMD pp sidis ee
measurements RHIC PAX HERMES COMPASS JLab EIC BELLE
summary
~2020~2020… new ideas for dedicated DY @RHIC!
X(h)heNl )()(
TMDs in SIDIS TMDs in SIDIS
future TMD pp sidis ee
measurements RHIC PAX HERMES COMPASS JLab EIC BELLE
summary
AUT S, ALT S,
AUL, ALU,…
in single/double hadronproduction
production, VM
@6GeV e27GeV e 160GeV
TMDs @HERMES TMDs @HERMES
Xπepe
Collins + Sivers effects disentangled !significant non-zero results
future TMD pp sidis ee
measurements RHIC PAX HERMES COMPASS JLab EIC BELLE
summary
0 , K on the way
weighted asymmetries under study hP
)()( 11 zHxh )()( 11 zHxh )()( 1T1 zDxf )()( 1T1 zDxf
TMDs @HERMES TMDs @HERMES
Xepe
significant non-zero result IFF non-zero!
future TMD pp sidis ee
measurements RHIC PAX HERMES COMPASS JLab EIC BELLE
summary
)()( 11 zHxh )()( 11 zHxh
future TMD pp sidis ee
measurements RHIC PAX HERMES COMPASS JLab EIC BELLE
summary
TMDs @HERMES TMDs @HERMES HERMES will run till mid 2007
data with transversely polarised target till Nov2005
~double(2002-2004) statistics by end 2005
Collins/Sivers asymmetry AUT(S) for K
2hadron asymmetry (IFF) for
till 2007: ALU() in 1 and 2 hadron production
all asymmetries compatible with zero
future TMD pp sidis ee
measurements RHIC PAX HERMES COMPASS JLab EIC BELLE
summary
TMDs @COMPASS TMDs @COMPASS
add 2003/2004 statistics: ~8∙(2002)
improved trigger for higher x, Q2
hadron ID with RICH
Xhd Xhhd
Collins
Sivers
future TMD pp sidis ee
measurements RHIC PAX HERMES COMPASS JLab EIC BELLE
summary
TMDs @COMPASSTMDs @COMPASS
two 60 cm long target-containerswith opposite polarisation
superconductive solenoid (2.5 T)
3He – 4He dilution refrigerator (T~50mK)
dipole (0.5 T)
COMPASS is foreseen to run up to the end of the present mid-term plan of CERN (2010)
2006++
2007/08 priority of hadron program
70mradpresentacceptance
180mrad
70mradpresentacceptance
proton target in 2006: 30 days NH3
with possibly new Compass magnet
future TMD pp sidis ee
measurements RHIC PAX HERMES COMPASS JLab EIC BELLE
summary
TMDs @COMPASSTMDs @COMPASS
two 60 cm long target-containerswith opposite polarisation
superconductive solenoid (2.5 T)
3He – 4He dilution refrigerator (T~50mK)
dipole (0.5 T)
COMPASS is foreseen to run up to the end of the present mid-term plan of CERN (2010)
2006++
2007/08 priority of hadron program
70mradpresentacceptance
180mrad
70mradpresentacceptance
proton target in 2006: 30 days NH3
with possibly new Compass magnet
Collins/Sivers asymmetry AUT(S) - on d,p target- for identified hadrons
2hadron asymmetry (IFF) ~
[ ALU() in 1 and 2 hadron production, AUL() ]
, VM production
future TMD pp sidis ee
measurements RHIC PAX HERMES COMPASS JLab EIC BELLE
summary
TMDs @JLab TMDs @JLab (6 GeV)(6 GeV) longitudinal target/beam asymmetries from
CLAS:
AUL ALU
PRELIMINARY
IC
424 PbWO4 ……..crystals
CLAS
CLAS+IC
future TMD pp sidis ee
measurements RHIC PAX HERMES COMPASS JLab EIC BELLE
summary
TMDs @JLab TMDs @JLab (6 GeV)(6 GeV) longitudinal target/beam asymmetries from
CLAS:
AUL
PRELIMINARY
IC
424 PbWO4 ……..crystals
11Lsin2UL HhA
Mulders
TMDs @JLab TMDs @JLab (6 GeV )(6 GeV ) transverse target polarisation:
approved proposal @Hall-A with 3He neutron
projections for 24 days
valence region small z-range
limited acceptance
future TMD pp sidis ee
measurements RHIC PAX HERMES COMPASS JLab EIC BELLE
summary
TMDs @JLab TMDs @JLab (6 GeV )(6 GeV )
future TMD pp sidis ee
measurements RHIC PAX HERMES COMPASS JLab EIC BELLE
summary
precise data with longitudinal beam/target polarisation:
ALU(), AUL() for , 1 hadron (2hadron) prod.
upcoming: AUT on neutron
!factorisation tests !
JLab @12 GeV ~2015
fragmentationfragmentationfunctionfunction
ee++ee--
fragmentation in sidis fragmentation in sidis
f
hfff zDdxqz )()()(d h
future TMD pp sidis ee
measurements RHIC PAX HERMES COMPASS JLab EIC BELLE
summary
FFFF fromfrom e e++ee--
)cos(
),(),(
21
221111
mzHmzHA
e-
e+
e+
e-
h2P
h1P
)2cos()()( 2111 zHzH
e-
e+
h1P
h2P
)cos()()( 212111 zHzHA
Xee jet21jet X)π(π)π(πee jet2jet1
future TMD pp sidis ee
measurements RHIC PAX HERMES COMPASS JLab EIC BELLE
summary
Collins FF interference FF
FFFF fromfrom e e++ee--e-
e+
add 0: favoured/unfavoured
extension to IFF straight forward
KEK: L~150 fb-1 per year
10% off-resonant
“unlimited” running: KEK superKEK 2012++
FF measurement will be dominated by systematic uncertainties
future TMD pp sidis ee
measurements RHIC PAX HERMES COMPASS JLab EIC BELLE
summary
current facilities: current facilities: near+mid term near+mid term futurefuture
far future JLab @12GeV PAX @GSI
Collins/2hadron FF with high accuracy
JLAB @6GeV
and a “dream” EIC
e-
e+
first extraction of TMDs feasible
future TMD pp sidis ee
measurements RHIC PAX HERMES COMPASS JLab EIC BELLE
summary
dream:dream: Electron Ion Collider Electron Ion Collider
future TMD pp sidis ee
measurements RHIC PAX HERMES COMPASS JLab EIC BELLE
summary
have a look at unpolarised DIS
current polarised DIS experiments
EIC would be “THE ” machine for polarised physics:
q, G, q, …
eRHIC @BNL ELIC @JLabeRHIC @BNL ELIC @JLab
• 5-10 GeV polarised e/e
• 20-250 GeV polarised p, ions luminosity ~ 1∙1033cm-2s-1
linac + eRing + RHIC
• 3-7 GeV polarised e
• 30-150 GeV polarised p, ions luminosity ~8∙1034 cm-2s-1
future TMD pp sidis ee
measurements RHIC PAX HERMES COMPASS JLab EIC BELLE
summary
Summary Summary
TMDs
SIDIS AUT, ALT, AUL, ALU, AUU
for single and double hadrons
production, VM
HERMES, Compass,
JLab@6GeV
JLab@12GeV, EIC
ee CollinsFF , IFF BELLE
pp AN for inclusive hadrons, di-jets Sivers AT in jets: Collins FF IFF
ATT inclusive jets, DY
STAR, PHENIX, BrahmsPAX
factorisationuniversality
future TMD pp sidis ee
measurements RHIC PAX HERMES COMPASS JLab EIC BELLE
summary