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IHEP 96 - 2
(in English) | |
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| A.V. Berezhnoy ,V.V. Kiselev , A.K. Likhoded | ||
| Hadronic production of S- and P-wave states of bc-quarkonium | ||
| Protvino, 1997.- p.15, figs. 9, tables 1, refs.:18. | ||
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 elsewhere 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 differences are discussed in details for the differential distributions over various kinematical quantities.
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