TY - JOUR
T1 - Extracting the Sivers function from polarized semi-inclusive deep inelastic scattering data and making predictions
AU - Anselmino, M.
AU - Boglione, M.
AU - D'Alesio, U.
AU - Kotzinian, A.
AU - Murgia, F.
AU - Prokudin, A.
PY - 2005/11/1
Y1 - 2005/11/1
N2 - The most recent data on the weighted transverse single spin asymmetry AUTsin(h-S) from HERMES and COMPASS Collaborations are analyzed within the LO parton model with unintegrated parton distribution and fragmentation functions; all transverse motions are taken into account, with exact kinematics, in the elementary interactions. The overall quality of the data is such that, for the first time, a rather well constrained extraction of the Sivers function for u and d quarks is possible and is performed. Comparisons with models are made. Based on the extracted Sivers functions, predictions for AUTsin(h-S) asymmetries at JLab are given; suggestions for further measurements at COMPASS, with a transversely polarized hydrogen target and selecting favorable kinematical ranges, are discussed. Predictions are also presented for single spin asymmetries in Drell-Yan processes at the Relativistic Heavy Ion Collider and the Facility for Antiproton and Ion Research at GSI-Darmstadt.
AB - The most recent data on the weighted transverse single spin asymmetry AUTsin(h-S) from HERMES and COMPASS Collaborations are analyzed within the LO parton model with unintegrated parton distribution and fragmentation functions; all transverse motions are taken into account, with exact kinematics, in the elementary interactions. The overall quality of the data is such that, for the first time, a rather well constrained extraction of the Sivers function for u and d quarks is possible and is performed. Comparisons with models are made. Based on the extracted Sivers functions, predictions for AUTsin(h-S) asymmetries at JLab are given; suggestions for further measurements at COMPASS, with a transversely polarized hydrogen target and selecting favorable kinematical ranges, are discussed. Predictions are also presented for single spin asymmetries in Drell-Yan processes at the Relativistic Heavy Ion Collider and the Facility for Antiproton and Ion Research at GSI-Darmstadt.
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U2 - 10.1103/PhysRevD.72.094007
DO - 10.1103/PhysRevD.72.094007
M3 - Article
AN - SCOPUS:29744464310
SN - 1550-7998
VL - 72
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 9
M1 - 094007
ER -