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.

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

References in corpus (6)

• Global analysis of fragmentation functions for pions and kaons and their uncertainties
• Determination of fragmentation functions and their uncertainties
• Measurement of Parton Distributions of Strange Quarks in the Nucleon from Charged-Kaon Production in Deep-Inelastic Scattering on the Deuteron
• Single-Transverse Spin Asymmetry in Semi-Inclusive Deep Inelastic Scattering
• Evidence for the Absence of Gluon Orbital Angular Momentum in the Nucleon
• Constraints on the gluon Sivers distribution via transverse single spin asymmetries at midrapidity in p(transv. polarized) p -> pi^0 X processes at BNL RHIC

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