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Sivers Single-Spin Asymmetry in Photon-Jet Production
2007
Physical Review Letters
We study a weighted asymmetry in the azimuthal distribution of photon-jet pairs produced in the process p^\uparrow p --> \gamma jet X with a transversely polarized proton. We focus on the contribution of the Sivers effect only, considering experimental configurations accessible at RHIC-BNL. We show that predictions for the asymmetry, obtained in terms of gluonic-pole cross sections calculable in perturbative QCD, can be tested and clearly discriminated from those based on a generalized parton
doi:10.1103/physrevlett.99.212002
pmid:18233210
fatcat:ocfildf5pbh6zhokcjn2z3zkoy