The Sivers Function from SIDIS Data
M. Anselmino, M. Boglione, U. D'Alesio, A. Kotzinian, S. Melis, F., Murgia, A. Prokudin, C. Turk
TL;DR
This paper analyzes the Sivers effect in SIDIS processes, fitting recent experimental data to determine quark and anti-quark Sivers distribution functions for various flavors, providing insights for future experiments.
Contribution
It presents a new fit of Sivers functions incorporating recent HERMES and COMPASS data, improving understanding of quark flavor contributions in SIDIS.
Findings
Determined Sivers functions for u, d, and s quarks and antiquarks.
Provided predictions for upcoming SIDIS experiments at COMPASS and JLab.
Enhanced the understanding of transverse spin asymmetries in pion and kaon production.
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.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · Quantum Chromodynamics and Particle Interactions · High-Energy Particle Collisions Research