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Trace of nonperturbative charm content of the nucleon on $Z + c$ $Z + c$ -jet production

S. Rostami

http://orcid.org/0000-0001-7082-6279

Faculty of Physics, Semnan University, P.O. Box 35195-363, Semnan, Iran

E-mail Address: saeedeh.rostami@semnan.ac.ir

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and

A. Khorramian

Faculty of Physics, Semnan University, P.O. Box 35195-363, Semnan, Iran

E-mail Address: khorramiana@semnan.ac.ir

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https://doi.org/10.1142/S0217751X17500956Cited by:0 (Source: Crossref)

Abstract

We perform a comparison of the impact of different intrinsic charm (IC) models, based on the prediction of the differential cross-sections of $Z$ $Z$ -boson and $c$ $c$ -jet production in $p p$ $p p$ collision. It is shown that regardless of choosing the model, considering nonperturbative intrinsic charm component increases the magnitude of the cross-section when the $Z$ $Z$ transverse momentum grows or at large rapidity $(y)$ $(y)$ of the $Z$ $Z$ . Moreover, to evaluate the effect of different parton distribution functions (PDFs), we also compare the results of two PDF sets in prediction of production $Z + c$ $Z + c$ -jet in $p p$ $p p$ at a center-of-mass energy of 13 TeV with taking into account the intrinsic charm contribution in the proton. It is shown that the various PDF sets give some difference in the description of the $Z + c$ $Z + c$ -jet cross-section.

Keywords:

PACS: 14.65.Dw, 14.70.Hp, 12.38.-t

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