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Centrality, Rapidity, and Transverse-Momentum Dependence of Gluon Shadowing and Antishadowing on J/ψ Production in dAu Collisions at Ös = 200s=200 GeV

Abstract : We have carried out a wide study of shadowing and antishadowing effects on J/ψ production in dAu collisions at Ö{sN N} = 200sNN=200 GeV. We have studied the effects of three different gluon nPDF sets, using the exact kinematics for a 2 → 2 process, namely g + g → J/ψ + g as expected from LO pQCD. We have computed the rapidity dependence of R CP and R dAu for the different centrality classes of the PHENIX data. For mid rapidities, we have also computed the transverse-momentum dependence of the nuclear modification factor, which cannot be predicted with the usual 2 → 1 simplified kinematics. All these observables have been compared to the PHENIX data in dAu collisions.
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http://hal.in2p3.fr/in2p3-00723998
Contributor : Sophie Heurteau <>
Submitted on : Thursday, August 16, 2012 - 11:37:00 AM
Last modification on : Wednesday, September 16, 2020 - 4:07:56 PM

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E.G. Ferreiro, F. Fleuret, J. P. Lansberg, N. Matagne, A. Rakotozafindrabe. Centrality, Rapidity, and Transverse-Momentum Dependence of Gluon Shadowing and Antishadowing on J/ψ Production in dAu Collisions at Ös = 200s=200 GeV. Few-Body Systems, Springer Verlag, 2012, 53, pp.27-36. ⟨10.1007/s00601-012-0310-9⟩. ⟨in2p3-00723998⟩

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