B-meson hadroproduction cross sections and up-to-date models
O. I. Piskounova
Abstract
The comparison of B-meson production cross sections as the results of PYTHIA code and Quark Gluon String Model (QGSM) is carried out for energies of proton colliders: Sp(p)S, Tevatron and LHC. Model predictions are based on the theory of supercritical Pomeron exchanges with the phenomenological intercept ΔP(0)=0.3, accepted for heavy quark production.Transverse momentum spectra of B-mesons are also compared. It is shown that the cross sections calculated with PYTHIA using CTEQ structure functions are in a contradiction with the asymptotical estimation of BB production cross sections in QGSM. Asymmetries between the spectra of B0 and B0 mesons are also contradicting. The reasons of the difference are discussed.
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