Open charm meson production at LHC

Rafal Maciula; Marta Luszczak; Antoni Szczurek

doi:10.1051/epjconf/20123706008

EPJ

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Proceedings

Open Access

EPJ Web of Conferences 37, 06008 (2012)
https://doi.org/10.1051/epjconf/20123706008

Open charm meson production at LHC^*

Rafal Maciula¹^a, Marta Luszczak²^b and Antoni Szczurek¹^,2^c

¹ Institute of Nuclear Physics PAN, PL-31-342 Cracow, Poland
² University of Rzeszów, PL-35-959 Rzeszów, Poland

^a e-mail: rafal.maciula@ifj.edu.pl
^b e-mail: luszczak@univ.rzeszow.pl
^c e-mail: antoni.szczurek@ifj.edu.pl

Abstract

We discuss charm production at the LHC. The production of single pairs is calculated in the k_t-factorization approach. We use Kimber-Martin-Ryskin unintegrated gluon distributions in the proton. The hadronization is included with the help of Peterson fragmentation functions. Transverse momentum and pseudorapidity distributions of charmed mesons are presented and compared to recent results of the ALICE, LHCb and ATLAS collaborations. Furthermore we discuss production of two pairs of within a simple formalism of double-parton scattering (DPS). Surprisingly large cross sections, comparable to single-parton scattering (SPS), are predicted for LHC energies. We discuss perspectives how to identify the double scattering contribution. We predict much larger cross section for large rapidity distance between charm quarks from different hard parton scatterings compared to single scattering.

This work was supported in part by the Polish MNiSW grants No. N N202 237040 and DEC-2011/01/B/ST2/04535.

© Owned by the authors, published by EDP Sciences, 2012

This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.