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

TL;DR

This paper investigates how the spatial distribution of hard partons within nucleons affects J/ψ suppression in d+Au collisions, revealing significant corrections in peripheral collisions and good agreement with experimental data.

Contribution

It introduces a Glauber Monte Carlo approach that incorporates the transverse distribution of hard partons, providing improved modeling of J/ψ suppression phenomena.

Findings

Upward correction in R_{dAu} dependence on N_{coll} in peripheral collisions

Minimal correction observed for R_{dAu} versus p_{T}

Theoretical results align well with PHENIX experimental data

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.