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Title: Extracting the Sivers function from polarized semi-inclusive deep inelastic scattering data and making predictions

Abstract

The most recent data on the weighted transverse single spin asymmetry A{sub UT}{sup sin({phi}{sub h}{sup -}{phi}{sub 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 A{sub UT}{sup sin({phi}{sub h}{sup -}{phi}{sub 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.

Authors:
; ;  [1]; ;  [2];  [3]
  1. Dipartimento di Fisica Teorica, Universita di Torino and INFN, Sezione di Torino, Via P. Giuria 1, I-10125 Torino (Italy)
  2. INFN, Sezione di Cagliari and Dipartimento di Fisica, Universita di Cagliari, C.P. 170, I-09042 Monserrato, Cagliari (Italy)
  3. Dipartimento di Fisica Generale, Universita di Torino and INFN, Sezione di Torino, Via P. Giuria 1, I-10125 Torino (Italy)
Publication Date:
OSTI Identifier:
20713821
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 72; Journal Issue: 9; Other Information: DOI: 10.1103/PhysRevD.72.094007; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ANTIPROTONS; ASYMMETRY; BROOKHAVEN RHIC; CEBAF ACCELERATOR; D QUARKS; DEEP INELASTIC SCATTERING; DISTRIBUTION; DRELL MODEL; MULTIPARTICLE SPECTROMETERS; PARTICLE IDENTIFICATION; POLARIZATION; POLARIZED TARGETS; SEMI-INCLUSIVE INTERACTIONS; SPIN

Citation Formats

Anselmino, M., Boglione, M., Prokudin, A., D'Alesio, U., Murgia, F., and Kotzinian, A. Extracting the Sivers function from polarized semi-inclusive deep inelastic scattering data and making predictions. United States: N. p., 2005. Web. doi:10.1103/PhysRevD.72.094007.
Anselmino, M., Boglione, M., Prokudin, A., D'Alesio, U., Murgia, F., & Kotzinian, A. Extracting the Sivers function from polarized semi-inclusive deep inelastic scattering data and making predictions. United States. doi:10.1103/PhysRevD.72.094007.
Anselmino, M., Boglione, M., Prokudin, A., D'Alesio, U., Murgia, F., and Kotzinian, A. Tue . "Extracting the Sivers function from polarized semi-inclusive deep inelastic scattering data and making predictions". United States. doi:10.1103/PhysRevD.72.094007.
@article{osti_20713821,
title = {Extracting the Sivers function from polarized semi-inclusive deep inelastic scattering data and making predictions},
author = {Anselmino, M. and Boglione, M. and Prokudin, A. and D'Alesio, U. and Murgia, F. and Kotzinian, A.},
abstractNote = {The most recent data on the weighted transverse single spin asymmetry A{sub UT}{sup sin({phi}{sub h}{sup -}{phi}{sub 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 A{sub UT}{sup sin({phi}{sub h}{sup -}{phi}{sub 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.},
doi = {10.1103/PhysRevD.72.094007},
journal = {Physical Review. D, Particles Fields},
number = 9,
volume = 72,
place = {United States},
year = {Tue Nov 01 00:00:00 EST 2005},
month = {Tue Nov 01 00:00:00 EST 2005}
}