Abstract
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 GeV2, 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 \(p_{T}^{\mu}>1.5\ \mbox{GeV}\) and pseudorapidities −1.6<η μ<2.3, as a function of \(p_{T}^{\mu}\) , η μ, 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.
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The ZEUS Collaboration., Chekanov, S., Derrick, M. et al. Measurement of charm and beauty production in deep inelastic ep scattering from decays into muons at HERA. Eur. Phys. J. C 65, 65–79 (2010). https://doi.org/10.1140/epjc/s10052-009-1193-x
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DOI: https://doi.org/10.1140/epjc/s10052-009-1193-x