Volume 86, Number 6, June 2009
Article Number 61001
Number of page(s) 6
Section The Physics of Elementary Particles and Fields
Published online 09 July 2009
EPL, 86 (2009) 61001
DOI: 10.1209/0295-5075/86/61001

Transverse momentum spectra of D and B mesons in hadron collisions at high energies

G. I. Lykasov1, Z. M. Karpova1, M. N. Sergeenko2 and V. A. Bednyakov1

1   Joint Institute for Nuclear Research - Dubna 141980, Moscow region, Russia
2   State University of Transport - 34 Kirov Street, Gomel 246653, Belarus

received 28 January 2009; accepted in final form 29 May 2009; published June 2009
published online 9 July 2009

Transverse momentum spectra of charmed and beauty mesons produced in proton-proton and proton-antiproton collisions at high energies are analyzed within the modified quark-gluon string model (QGSM) including the internal motion of quarks in colliding hadrons. It is shown that this approach can describe rather satisfactorily the experimental data at not large values of the transverse momentum where the NLO QCD calculation has a big uncertainty. We also show that using both the QGSM and the NLO QCD one can describe these data in a wide region of transverse momenta and give some predictions for the future LHC experiments.

14.40.Lb - Charmed mesons.
14.65.Dw - Charmed quarks.
25.20.Lj - Photoproduction reactions.

© EPLA 2009