Influence of the Nucleon Hard Partons Distribution on J/\Psi Suppression in a GMC Framework

Abstract

In a Glauber Monte Carlo framework, taking account of the transverse spatial distribution of hard partons in the nucleon, we analyse the nuclear modification factor $R_{dAu}$ for $J/\psi$ in d+Au collisions with the EPS09 shadowing parametrization. After the influence of nucleon hard partons distribution is considered, a clearly upward correction is revealed for the dependence of $R_{dAu}$ on $N_{coll}$ in peripheral d+Au collisions, however, an unconspicuous correction is shown for the results versus $p_T$. The theoretical results are in good agreement with the experimental data from PHENIX.

Comments: 7pages,2figures