Measurement of beauty production using events with a muon and a jet in ZEUS at HERA        

Beauty production was measured with events in which a muon and a jet were 
observed in the final state with the ZEUS detector at HERA using an integrated
luminosity of 114 pb-1. The fraction of beauty quarks in the data was 
determined using the distribution of the transverse momentum of the muon 
relative to the jet. The visible cross section for beauty production was 
determined. Differential cross sections in Q^2, p_T^mu, eta^mu, p_T^jet 
and eta^jet are presented an compared to next-to-leading order QCD predictions.
The beauty contribution to the structure function F2, F2b, was extracted 
and the result is compared to theoretical predictions.