Hadronic production of S- and P-wave states of (b-bar c)-quarkonium

Abstract

In the leading $O({\alpha }_s^4)$ order of the perturbative QCD, the hadronic production cross-sections of $S$- and $P$-wave states of $B_c$ meson are calculated. The results for the $S$-wave levels are compared with the values given in other papers as well as in the model of the $b$ quark fragmenatation into $B_c$. In the given order, the cross-sections of the hadronic production of the $P$-wave states are calculated for the first time. Their contribution into the $B_c$ meson production is less than 10\%. There is a strong difference between the predictions of the fragmentation model and the exact perturbative calculations. These difeerences are discussed in details for the differential distributions over various kinematical quantities.

12 pages, LATEX file, ps-figures. uuencoded compresed tar-file

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• PRODUCTION OF $B_c$ MESONS IN HADRONIC COLLISIONS
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• Production Mechanisms for $B_c$ Mesons in Photon--Photon Collisions
• Photonic production of B_c-mesons
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