Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2000-01-25
Phys.Atom.Nucl.64:392,2001
Physics
High Energy Physics
High Energy Physics - Phenomenology
LateX, pages, 4 epsfigures, some ideas of this paper were already published in the last millenium, Proceed. of 'Heavy Quarks',
Scientific paper
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: $Sp\bar(p)S$, Tevatron and LHC. Model predictions are based on the theory of supercritical Pomeron exchanges with the phenomenological intercept $\Delta_P$(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 B$\bar{B}$ production cross sections in QGSM. Asymmetries between the spectra of $B^0$ and $\bar{B0}$ mesons are also contradicting. The reasons of the difference are discussed.
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