Transversity and Collins Fragmentation Functions: Towards a New Global Analysis
Abstract
A new, preliminary global analysis of the experimental data on azimuthal asymmetries in SIDIS from HERMES and COMPASS collaborations, and in e+e- --> h_1 h_2 X 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 and quarks, in comparison with the results of our previous analysis. Estimates for the single spin asymmetry A_UT^{\sin(\phi_h + \phi_S)} at JLab and COMPASS, operating on a transversely polarized proton target, are presented.
Cite
@article{arxiv.0807.0173,
title = {Transversity and Collins Fragmentation Functions: Towards a New Global Analysis},
author = {M. Anselmino and M. Boglione and U. D'Alesio and A. Kotzinian and S. Melis and F. Murgia and A. Prokudin and C. Turk},
journal= {arXiv preprint arXiv:0807.0173},
year = {2015}
}
Comments
4 pages, 4 figures. To appear in the proceedings of the XVI International Workshop on Deep Inelastic Scattering and Related Subjects, DIS 2008, London, U.K., 7-11 April, 2008