Sivers Effect for Pion and Kaon Production in Semi-Inclusive Deep Inelastic Scattering
Abstract
We study the Sivers effect in the transverse single spin asymmetries (SSA) for pion and kaon production in semi-inclusive deep inelastic scattering (SIDIS) processes. We perform a fit of A^sin(phi_h-phi_S)_UT which, by including recent high statistics experimental data for pion and kaon production from HERMES and COMPASS Collaborations, allows a new determination of the Sivers distribution functions for quarks and antiquarks with u, d and s flavours. Estimates for forthcoming SIDIS experiments at COMPASS and JLab are given.
Keywords
Cite
@article{arxiv.0805.2677,
title = {Sivers Effect for Pion and Kaon Production in Semi-Inclusive Deep Inelastic Scattering},
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:0805.2677},
year = {2009}
}
Comments
16 pages, 19 figures; v2: no changes in results and conclusions; some sentences rephrased, few paragraphs (and references) added; a new table (table 2) with individual chi^2 per data points added; figures for JLab at 6 GeV removed; matches the version published on Eur. Phys. J. A