Update on transversity and Collins functions from SIDIS and e+ e- data

Details Update on transversity and Collins functions from SIDIS and e+ e- data Update on transversity and Collins functions from SIDIS and e+ e- data

2008-12-23

arxiv.org/abs/0812.4366v1

Nucl.Phys.Proc.Suppl.191:98-107,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 10 ps figures, uses espcrc2.sty. Invited talk delivered by U. D'Alesio at the Ringberg Workshop "New Trends in HERA

Scientific paper

10.1016/j.nuclphysbps.2009.03.11

We present an update of a previous global analysis of the experimental data on azimuthal asymmetries in semi-inclusive deep inelastic scattering (SIDIS), from the HERMES and COMPASS Collaborations, and in e+ e- -> h1 h2 X processes, from the Belle Collaboration. Compared to the first extraction, a more precise determination of the Collins fragmentation function and the transversity distribution function for u and d quarks is obtained.

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