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Spin WG Summary - spin experiments -. DIS2006 in Tsukuba April 24, 2006 Yuji Goto (RIKEN/RBRC). Spin Puzzle. : quark-spin contribution global analysis of DIS and SIDIS data flavor decomposition extension to low- Q 2 transversity G : gluon-spin contribution
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Spin WG Summary- spin experiments - DIS2006 in Tsukuba April 24, 2006 Yuji Goto (RIKEN/RBRC)
Spin Puzzle • : quark-spin contribution • global analysis of DIS and SIDIS data • flavor decomposition • extension to low-Q2 • transversity • G: gluon-spin contribution • L: orbital angular momentum (OAM) • DVCS • transverse spin asymmetries • Sivers function and Collins function DIS2006 Spin WG Summary
P. Mulders DIS2006 Spin WG Summary
quark distribution functions and fragmentation functions • transversity distribution function • distribution of the transverse-spin of a parton inside the transversely polarized proton • Sivers distribution function • correlation between the transverse-spin of the proton and the transverse-momentum of an unpolarized parton inside the proton (pT2) • Collins fragmentation function • correlation between the transverse spin of a fragmenting quark and the transverse momentum of the outgoing hadron relative to the quark (kT2) DIS2006 Spin WG Summary
experimental talks (Convenors: D. Ryckbosch and Y. Goto) • transverse spin asymmetries and transversity • HERMES (L. Pappalardo) COMPASS (H. Fischer) • RHIC PHENIX (K. Tanida) STAR (C. Gagliardi) BRAHMS (J.H. Lee) polarimeter (A. Bravar) • J-PARC & GSI (P. Lenisa) • polarized fragmentation functions • BELLE (R. Seidl) • COMPASS (B.Grube) • RHIC STAR (J. Kiryluk) • DVCS • HERMES (Z. Ye) • G • RHIC STAR (J. Kiryluk, F. Simon) PHENIX (M. Liu, Y. Fukao) • COMPASS (K. Kurek) • quark/antiquark flavor decomposition • RHIC PHENIX (M. Liu) STAR (F. Simon) • low-Q2 DIS • COMPASS (M. Stolarski) • JLAB CLAS (V. Dharmawardane, Y. Prok) Hall-A (N. Liyanage) Hall-C (S. Tajima) DIS2006 Spin WG Summary
transverse spin asymmetries and transversity • HERMES (L. Pappalardo) • COMPASS (H. Fischer, B. Grube) • PHENIX (K. Tanida) • STAR (C. Gagliardi) • BRAHMS (J.H. Lee) • RHIC polarimeter (A. Bravar) • J-PARC & GSI (P. Lenisa) DIS2006 Spin WG Summary
HERMES (L. Pappalardo) DIS2006 Spin WG Summary
HERMES (L. Pappalardo) DIS2006 Spin WG Summary
COMPASS (H. Fischer) DIS2006 Spin WG Summary
COMPASS (H. Fischer) DIS2006 Spin WG Summary
PHENIX (K. Tanida) DIS2006 Spin WG Summary
PHENIX (K. Tanida) DIS2006 Spin WG Summary
STAR (C. Gagliardi) DIS2006 Spin WG Summary
STAR (C. Gagliardi) DIS2006 Spin WG Summary
BRAHMS (J.H. Lee) DIS2006 Spin WG Summary
BRAHMS (J.H. Lee) DIS2006 Spin WG Summary
BRAHMS (J.H. Lee) DIS2006 Spin WG Summary
RHIC polarimeter (A. Bravar) DIS2006 Spin WG Summary
RHIC polarimeter (A. Bravar) DIS2006 Spin WG Summary
RHIC polarimeter (A. Bravar) DIS2006 Spin WG Summary
RHIC polarimeter (A. Bravar) DIS2006 Spin WG Summary
J-PARC & GSI (P. Lenisa) DIS2006 Spin WG Summary
polarized fragmentation functions • BELLE (R. Seidl) • COMPASS (B. Grube) • STAR (J. Kiryluk) DIS2006 Spin WG Summary
BELLE (R. Seidl) DIS2006 Spin WG Summary
COMPASS (B. Grube) DIS2006 Spin WG Summary
COMPASS (B. Grube) DIS2006 Spin WG Summary
STAR (J. Kiryluk) DIS2006 Spin WG Summary
DVCS • HERMES (Z. Ye) DIS2006 Spin WG Summary
HERMES (Z. Ye) DIS2006 Spin WG Summary
HERMES (Z. Ye) DIS2006 Spin WG Summary
G • STAR (J. Kiryluk, F. Simon) • PHENIX (M. Liu, Y. Fukao) • COMPASS (K. Kurek) DIS2006 Spin WG Summary
STAR (J. Kiryluk) DIS2006 Spin WG Summary
PHENIX (Y. Fukao) DIS2006 Spin WG Summary
COMPASS (K. Kurek) DIS2006 Spin WG Summary
quark/antiquark flavor decomposition • RHIC PHENIX (M. Liu) • STAR (F. Simon) DIS2006 Spin WG Summary
PHENIX (M. Liu) DIS2006 Spin WG Summary
STAR (F. Simon) DIS2006 Spin WG Summary
low-Q2 DIS • COMPASS (M. Stolarski) • JLAB CLAS (V. Dharmawardane, Y. Prok) • JLAB Hall-A (N. Liyanage) • JLAB Hall-C (S. Tajima) DIS2006 Spin WG Summary
COMPASS (M. Stolarski) DIS2006 Spin WG Summary
JLAB CLAS (Y. Prok) DIS2006 Spin WG Summary
JLAB CLAS (Y. Prok) DIS2006 Spin WG Summary
JLAB CLAS (Y. Prok) DIS2006 Spin WG Summary
JLAB Hall-A (N. Liyanage) DIS2006 Spin WG Summary
JLAB Hall-A (N. Liyanage) DIS2006 Spin WG Summary
JLAB Hall-C (S. Tajima) DIS2006 Spin WG Summary
JLAB Hall-C (S. Tajima) DIS2006 Spin WG Summary
Summary • We are still accumulating data to understand the nucleon spin structure • • W production data, low-Q2 data, … • G • RHIC, COMPASS • L (OAM) • transverse spin asymmetries from both lepton- scattering and hadron-scattering data DIS2006 Spin WG Summary