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arXiv · hep-ph/0511249

Sivers function: SIDIS data, fits and predictions

M. Anselmino·M. Boglione·U. D'Alesio·A. Kotzinian·F. Murgia·A. Prokudin
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Abstract

The most recent data on the weighted transverse single spin asymmetry A_{UT}^{\sin(ϕ_h-ϕ_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(ϕ_h-ϕ_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.

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M. Anselmino, M. Boglione, U. D'Alesio, A. Kotzinian, F. Murgia, A. Prokudin. 2005-11-21. Sivers function: SIDIS data, fits and predictions. https://doi.org/10.1142/9789812773272_0022

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