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

来源：

FEW-BODY SYSTEMS | 2012年 / 53卷 / 1-2期

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

页码：27 / 36

页数：10

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