The Sivers single-spin asymmetry in photon-jet production

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dc.creatorBacchetta, Alessandro
dc.creatorBomhof, Cedran
dc.creatorD'Alesio, Umberto
dc.creatorMulders, P. J.
dc.creatorMurgia, F.
dc.date2007-03-14
dc.date2007-11-22
dc.date.accessioned2026-07-07T11:02:51Z
dc.date.available2026-07-07T11:02:51Z
dc.descriptionWe study a weighted asymmetry in the azimuthal distribution of photon-jet pairs produced in the process p^\uparrow p --> γjet 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 model, involving standard partonic cross sections. Experimental measurements of the asymmetry will therefore test our present understanding of single-spin asymmetries.
dc.descriptionSome changes in the text and in the layout. Two references added. Accepted for publication in PRL
dc.identifierhttps://arxiv.org/abs/hep-ph/0703153
dc.identifierhttp://arxiv.org/abs/hep-ph/0703153
dc.identifierPhys.Rev.Lett.99:212002,2007
dc.identifierdoi:10.1103/PhysRevLett.99.212002
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/188392
dc.subjectHigh Energy Physics - Phenomenology
dc.titleThe Sivers single-spin asymmetry in photon-jet production
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