arXiv:0807.0166·v1·High Energy Physics — Phenomenology
The Sivers Function from SIDIS Data
M. Anselmino🇮🇹 · M. Boglione🇮🇹 · U. D'Alesio🇮🇹 · A. Kotzinian🇮🇹 · S. Melis🇮🇹 · F. Murgia🇮🇹 · A. Prokudin🇮🇹 · C. Turk🇮🇹
Abstract
We study the Sivers effect in 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 taking into account the recent data from HERMES and COMPASS Collaborations, which allow a new determination of the Sivers distribution functions for quark and anti-quark with u, d and also s flavours. Estimates for forthcoming SIDIS experiments at COMPASS and JLab are given.
Comments: 4 pages, 1 figure. 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