The impact of the intrinsic charm quark content of the proton on differential $\gamma +c$ cross section

Abstract

We present a comparative analysis of the impact of the non-perturbative intrinsic charm quark content of the proton on differential cross section of $\gamma +c$-jet in $pp$ and $p\bar{p}$ collisions, for the kinematic regions that are sensitive to this contribution. We discuss the $Q^2$ evolution of intrinsic quark distributions and present a code which provide these distributions as a function of $x$ and $Q^2$ for any arbitrary Fock state probability. For the $p\bar{p}$ collisions at the Tevatron, the results are compared with the recent experimental data of D0 at $\sqrt{s}=1.96$ TeV and also predictions for $pp$ collisions at $\sqrt{s}=8$ TeV and $\sqrt{s}=13$ TeV for the LHC.

Comments: 16 pages, 8 figures, it is to be published in Journal of Physics G