The most recent data on the weighted transverse single spin asymmetry A_{UT}^{\sin(\phi_h-\phi_S)} from HERMES and COMPASS collaborations are analysed within LO parton model; all transverse motions are taken into account. Extraction of the Sivers function for u and d quarks is performed. Based on the extracted Sivers functions, predictions for A_{UT}^{\sin(\phi_h-\phi_S)} asymmetries at JLab are given; suggestions for further measurements at COMPASS, with a transversely polarized hydrogen target and selecting favourable kinematical ranges, are discussed. Predictions are also presented for Single Spin Asymmetries (SSA) in Drell-Yan processes at RHIC and GSI.
@article{arxiv.hep-ph/0511249,
title = {Sivers function: SIDIS data, fits and predictions},
author = {M. Anselmino and M. Boglione and U. D'Alesio and A. Kotzinian and F. Murgia and A. Prokudin},
journal= {arXiv preprint arXiv:hep-ph/0511249},
year = {2017}
}
Comments
Contribution to the proceedings of "The International Workshop on Transverse Polarisation Phenomena in Hard Processes" (Transversity 2005), Como, Italy, 7-10th September 2005, talk presented by A. Prokudin, 8 pages, 10 figures