Heavy quark & direct photon production and heavy quark parton densities

Details Heavy quark & direct photon production and heavy quark parton densities Heavy quark & direct photon production and heavy quark parton densities

2010-12-07

arxiv.org/abs/1012.1505v2

Nucl.Phys.Proc.Suppl.214:114-117,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

Quarkonium 2010 Proceedings

Scientific paper

10.1016/j.nuclphysbps.2011.03.06

Direct photon production in association with a heavy quark can serve as an excellent tool for the study of the heavy quark distributions. Currently it is believed that heavy quarks are produced radiatively inside the nucleon, and so there is no need to take into account heavy quark parameters inside global PDF analyses. Certain models taking into account the possibility of an intrinsic charm component exist. Here we present how these affect the \gamma + c cross section. While at pA collisions the potential of this process to constrain the gluon nuclear PDF which is currently largely unconstrained is presented.

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