Measurement of beauty photoproduction using inclusive dijet events with ZEUS at HERA 

Photoproduction of b quarks in inclusive dijet events was measured with the 
ZEUS detector at HERA. The large mass of the beauty quark and its long 
lifetime were exploited in order to separate the beauty signal from 
background, making use of the microvertex detector to determine the secondary 
vertex position with respect to the primary vertex. A lepton tag was 
therefore not needed. Differential cross sections were measured and 
compared to next-to-leading order QCD predictions as well as to measurements 
of the semileptonic channel.