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

被引:0
|
作者
Ferreiro, E. G. [5 ]
Fleuret, F. [4 ]
Lansberg, J. P. [3 ]
Matagne, N. [1 ]
Rakotozafindrabe, A. [2 ]
机构
[1] Univ Mons, Serv Phys Nucl & Subnucl, B-7000 Mons, Belgium
[2] CEA Saclay, IRFU SPhN, F-91191 Gif Sur Yvette, France
[3] Univ Paris 11, IPNO, CNRS IN2P3, F-91406 Orsay, France
[4] Ecole Polytech, Lab Leprince Ringuet, CNRS IN2P3, F-91128 Palaiseau, France
[5] Univ Santiago de Compostela, Dept Fis Particulas, Santiago De Compostela 15782, Spain
关键词
PB-PB COLLISIONS; PP COLLISIONS; SUPPRESSION;
D O I
10.1007/s00601-012-0310-9
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We have carried out a wide study of shadowing and antishadowing effects on J/psi production in dAu collisions at 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/psi + 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.
引用
收藏
页码:27 / 36
页数:10
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