Bottom photoproduction measured using decays into muons in dijet events in e p collisions at s**(1/2) = 318-GeVстатья
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Дата последнего поиска статьи во внешних источниках: 7 февраля 2018 г.
Аннотация:The photoproduction of beauty quarks in events with two jets and a muon has been measured with the ZEUS detector at HERA using an integrated luminosity of 110 pb−1. The fraction of jets containing b quarks was extracted from the transverse momentum distribution of the muon relative to the closest jet. Differential cross sections for beauty production as a function of the transverse momentum and pseudorapidity of the muon, of the associated jet and of xjetsγ, the fraction of the photon's momentum participating in the hard process, are compared with MC models and QCD predictions made at next-to-leading order. The latter give a good description of the data.