A new, preliminary global analysis of the experimental data on azimuthal asymmetries in SIDIS from HERMES and COMPASS collaborations, and in e +e- → h1h2X processes from the BELLE collaboration, is performed. The new data allow for a more precise determination of the Collins fragmentation function and of the transversity distribution function for u and d quarks, in comparison with the results of our previous analysis. Estimates for the single spin asymmetry A sin(φh+φS)UT at JLab and COMPASS, operating on a transversely polarized proton target, are presented.
|Original language||English (US)|
|State||Published - Dec 1 2008|
|Event||16th International Workshop on Deep-Inelastic Scattering and Related Topics, DIS 2008 - London, United Kingdom|
Duration: Apr 7 2008 → Apr 11 2008
|Other||16th International Workshop on Deep-Inelastic Scattering and Related Topics, DIS 2008|
|Period||4/7/08 → 4/11/08|
All Science Journal Classification (ASJC) codes