A Measurement of Beauty Photoproduction Through Decays to Muons and Jets at HERA-II
arXiv:0906.5435 · doi:10.3360/dis.2009.116
Abstract
The photoproduction of beauty quarks in ep collisions has been measured using a data sample of 170 pb^-1 collected with the H1 detector at HERA-II in the years 2006 and 2007. Events with two jets and a muon in the final state were investigated, and beauty events were identified using the muon's relative transverse momentum to a jet and its impact parameter. Visible cross sections were measured differentially in the transverse momenta of the highest energy jet (p_T^jet1) and the muon (pt_mu), the pseudorapidity of the muon (eta_mu) and of the photon's momentum fraction x_gamma entering the hard interaction. The measurements are found to be well described by QCD calculations at NLO.
6 pages, 2 figures, to appear in the proceedings of the XVII International Workshop on Deep Inelastic Scattering and Related Subjects DIS 2009, Madrid, Spain, April 26-30, 2009