Open charm meson production at LHC

We discuss charm production at the LHC. The production of single $c\bar c$ pairs is calculated in the kt-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 mom...

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Bibliographic Details
Published in:EPJ Web of conferences 2012-01, Vol.37, p.6008
Main Authors: Maciula, Rafal, Luszczak, Marta, Szczurek, Antoni
Format: Article
Language:English
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Summary:We discuss charm production at the LHC. The production of single $c\bar c$ pairs is calculated in the kt-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 $c\bar c$ 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.
ISSN:2100-014X
2100-014X
DOI:10.1051/epjconf/20123706008