Some features of the hadronic B*(c) meson production at large p(T)статья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Местоположение издательства:Road Town, United Kingdom
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Аннотация:The calculations of the hadronic B (∗)c-mesons production performed in the framework of the perturbative QCD taking into account O(αs 4) Feynmann diagrams are presented. The comparison of the exact calculations with those based on the fragmentation model of bˉ→B (∗)c+X shows the large discrepancy between them. The exact calculations of the B (∗)c-mesons production cross-sections as the function of pT at the energy of the FNAL Tevatron (s√=1.8 TeV) are given. The predicted ratio of the vector to the pseudoscalar state cross-sections is about R∼3 instead of R∼1.4 for the fragmentation model.