Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2009-04-22
Eur.Phys.J.C65:65-79,2010
Physics
High Energy Physics
High Energy Physics - Experiment
14 pages, 6 tables, 7 figures, accepted by EPJC
Scientific paper
10.1140/epjc/s10052-009-1193-x
The production of charm and beauty quarks in ep interactions has been measured with the ZEUS detector at HERA for squared four-momentum exchange Q^2>20 GeV^2, using an integrated luminosity of 126 pb^{-1}. Charm and beauty quarks were identified through their decays into muons. Differential cross sections were measured for muon transverse momenta p_T^{\mu}>1.5 GeV and pseudorapidities -1.6<\eta^{\mu}<2.3, as a function of p_T^{\mu}, \eta^{\mu}, Q^2 and Bjorken x. The charm and beauty contributions to the proton structure function F_2 were also extracted. The results agree with previous measurements based on independent techniques and are well described by QCD predictions.
Chekanov S.
The ZEUS Collaboration
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