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Future studies of Transverse Momentum Dependent (TMD) functions

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.

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Future studies of Transverse Momentum Dependent (TMD) functions

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  1. Future studies of Transverse Momentum Dependent (TMD) functions Delia Hasch Symmetry and Spin 2005 Advanced Studies Institute, Praha (CZ), Jul 27-Aug 03

  2. new class of FF • more functions @twist-3 … • manifest in azimuthal/SSA/ l-r asymmetries ___ Delia Hasch______ Future TMD measurements _____________ Symmetry and Spin 2005 _______ Praha (CZ), 01-08-05 object add kT dependent DF : transversity Boehr Mulders Sivers

  3. left right pp e+e- sidis ALT beam target DFFF e+ e- ___ Delia Hasch______ Future TMD measurements _____________ Symmetry and Spin 2005 _______ Praha (CZ), 01-08-05 observables DY, ATT incl. jets Collins FF IFF unpol FF AUT(f±fS), , ALT(f±fS) AUL(f), ALU(f) AUU(f), … L production, VM, … AN jet correlations, …

  4. pp e+e- sidis future TMD pp sidis e+e- measurements RHIC PAX HERMES COMPASS JLab EIC BELLE summary observables experiments @RHIC: @DESY @KEK @CERN @6GeV (very) far future PAX@GSI JLab@12GeV EIC

  5. left right future TMD pp sidis e+e- measurements RHICPAX HERMES COMPASS JLab EIC BELLE summary TMDs @RHIC contributions:  higher twist • Sivers effect • Collins effect Fermilab E704: √s ~20 GeV

  6. left right RHIC: √s ~200 GeV future TMD pp sidis e+e- measurements RHICPAX HERMES COMPASS JLab EIC BELLE summary TMDs @RHIC Fermilab E704: √s ~20 GeV

  7. left right with current data set till 2005 (<Pb>~0.45): • map kinematic dependencies xF, PT • hadron ID: p+/-/0, K+/-, p • new observables to disentangle different mechanism: RHIC: √s ~200 GeV future TMD pp sidis e+e- measurements RHICPAX HERMES COMPASS JLab EIC BELLE summary TMDs @RHIC Fermilab E704: √s ~20 GeV

  8. FMS silicon tracker AT with 32pb-1 future TMD pp sidis e+e- measurementsRHICPAX HERMES COMPASS JLab EIC BELLE summary future: TMDs @RHIC azimuthal back to back correlation between hadrons in opposite hemisphere jets:  clean channel for Sivers effect 1-30 pb-1 Pb = 0.5 • analysis of jet structure: • isolate Collins effect • 2hadron interference 30-100 pb-1 Pb ≥ 0.5 • DY, inclusive jets: • direct access to h1 0.1-1 fb-1 Pb ≥ 0.7

  9. T=15 GeV (s=5.7 GeV) T=22 GeV (s=6.7 GeV) Anselmino et al. PLB 594,97 (2004) xF=x1-x2 ~2020 future TMD pp sidis e+e- measurements RHIC PAX HERMES COMPASS JLab EIC BELLE summary Future: Drell Yan p p @GSI spin-transferfrom polarized electrons of the target to antiprotons GSI: s~30-50 GeV2t=x1x2=M2/s~0.2-0.3 exploration of valence quarks (h1q(x,Q2) large) RHIC: t=x1x2=M2/s~10-3  exploration of the sea quark ATT very small (~ 1 %) … new ideas for dedicated DY @RHIC!

  10. future TMD pp sidis e+e- measurementsRHIC PAX HERMES COMPASS JLab EIC BELLE summary TMDs in SIDIS AUT (f±fS), ALT (f±fS), AUL(f), ALU(f),… in single/double hadron production L production, VM @6GeV e- 27GeV e+/- 160GeV m+

  11. p0 , K+(-) on the way • weighted asymmetries under study future TMD pp sidis e+e- measurementsRHIC PAX HERMES COMPASS JLab EIC BELLE summary TMDs @HERMES Collins + Sivers effects disentangled ! significant non-zero results

  12. future TMD pp sidis e+e- measurementsRHIC PAX HERMES COMPASS JLab EIC BELLE summary TMDs @HERMES significant non-zero result  IFF non-zero!

  13. future TMD pp sidis e+e- measurementsRHIC PAX HERMES COMPASS JLab EIC BELLE summary 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(f±fS) for p+ p- p0 K+(-) • 2hadron asymmetry (IFF) for p till 2007:ALU(f) in 1 and 2 hadron production

  14.  add 2003/2004 statistics: ~8∙(2002)  improved trigger for higher x, Q2  hadron ID with RICH future TMD pp sidis e+e- measurementsRHIC PAX HERMES COMPASS JLab EIC BELLE summary TMDs @COMPASS Collins Sivers  all asymmetries compatible with zero

  15. 3He – 4He dilution refrigerator (T~50mK) superconductive solenoid (2.5 T) dipole (0.5 T) 2006++ 180mrad present acceptance present acceptance 70mrad 70mrad two 60 cm long target-containers with opposite polarisation  proton target in 2006: 30 days NH3 future TMD pp sidis e+e- measurementsRHIC PAX HERMES COMPASS JLab EIC BELLE summary TMDs @COMPASS COMPASS is foreseen to run up to the end of the present mid-term plan of CERN (2010) with possibly new Compass magnet  2007/08 priority of hadron program

  16. 3He – 4He dilution refrigerator (T~50mK) superconductive solenoid (2.5 T) dipole (0.5 T) 2006++ • Collins/Sivers asymmetry AUT(f±fS) - on d,p target - for identified hadrons • 2hadron asymmetry (IFF) ~ • [ ALU(f) in 1 and 2 hadron production, AUL(f) ] L , VM production 180mrad present acceptance present acceptance 70mrad 70mrad two 60 cm long target-containers with opposite polarisation  proton target in 2006: 30 days NH3 future TMD pp sidis e+e- measurementsRHIC PAX HERMES COMPASS JLab EIC BELLE summary TMDs @COMPASS COMPASS is foreseen to run up to the end of the present mid-term plan of CERN (2010) with possibly new Compass magnet  2007/08 priority of hadron program

  17. 424 PbWO4 ……..crystals IC CLAS+IC CLAS future TMD pp sidis e+e- measurementsRHIC PAX HERMES COMPASS JLabEIC BELLE summary TMDs @JLab (6 GeV) • longitudinal target/beam asymmetries from CLAS: AUL ALU PRELIMINARY p+

  18. 424 PbWO4 ……..crystals IC future TMD pp sidis e+e- measurementsRHIC PAX HERMES COMPASS JLabEIC BELLE summary TMDs @JLab (6 GeV) • longitudinal target/beam asymmetries from CLAS: AUL PRELIMINARY Mulders

  19.  valence region • small z-range  limited f acceptance future TMD pp sidis e+e- measurementsRHIC PAX HERMES COMPASS JLabEIC BELLE summary TMDs @JLab (6 GeV )  transverse target polarisation: projections for 24 days approved proposal @Hall-A with 3He  neutron p-

  20. precise data with longitudinal beam/target polarisation: ALU(f), AUL(f) for p+/-/0 , 1 hadron (2hadron) prod.  upcoming: AUT on neutron JLab @12 GeV ~2015 future TMD pp sidis e+e- measurementsRHIC PAX HERMES COMPASS JLabEIC BELLE summary TMDs @JLab (6 GeV ) p- !factorisation tests !

  21. fragmentation function  e+e- future TMD pp sidis e+e- measurementsRHIC PAX HERMES COMPASS JLab EIC BELLE summary fragmentation in sidis

  22. e+ q f2-p e+ q f f1 e+ e- e- e- future TMD pp sidis e+e- measurements RHIC PAX HERMES COMPASS JLab EIC BELLE summary FFfrom e+e- Collins FF interference FF

  23. KEK: L~150 fb-1 per year 10% off-resonant • “unlimited” running: KEK  superKEK 2012++ • FF measurement will be dominated by systematic uncertainties e+ e- future TMD pp sidis e+e- measurements RHIC PAX HERMES COMPASS JLab EIC BELLE summary FFfrom e+e- • add p0: favoured/unfavoured • extension to IFF straight forward Milestone!

  24. first extraction of TMDs feasible e+ e- future TMD pp sidis e+e- measurements RHIC PAX HERMES COMPASS JLab EIC BELLE summary current facilities: near+mid term future • Collins/2hadron FF with high accuracy JLAB @6GeV far future JLab @12GeV PAX @GSI and a “dream”  EIC

  25. future TMD pp sidis e+e- measurements RHIC PAX HERMES COMPASS JLab EIC BELLE summary dream: Electron Ion Collider have a look at unpolarised DIS current polarised DIS experiments EIC would be “THE ” machine for polarised physics: Dq, DG, dq, …

  26. future TMD pp sidis e+e- measurements RHIC PAX HERMES COMPASS JLab EIC BELLE summary eRHIC @BNL ELIC @JLab  linac + eRing + RHIC • 5-10 GeV polarised e+/e- • 20-250 GeV polarised p, ions • 3-7 GeV polarised e- • 30-150 GeV polarised p, ions luminosity ~8∙1034 cm-2s-1 luminosity ~ 1∙1033cm-2s-1

  27. pp  AN for inclusive hadrons, di-jets  Sivers AT in jets:  Collins FF  IFF ATT inclusive jets, DY STAR, PHENIX, Brahms PAX SIDIS  AUT, ALT, AUL, ALU, AUU for single and double hadrons L production, VM HERMES, Compass, JLab@6GeV JLab@12GeV, EIC TMDs e+e-  CollinsFF , IFF BELLE factorisation universality future TMD pp sidis e+e- measurements RHIC PAX HERMES COMPASS JLab EIC BELLE summary Summary

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