2009/01/31 by ZEUS collaboration
Physics and Astronomy · #Astronomy #Beauty #Deep inelastic scattering #Detector #Galaxy #HERA #High-Energy Particle Collisions Research #Jet (fluid) #Luminosity #Muon #Nuclear physics #Optics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Vertex (graph theory) #ZEUS (particle detector) #hep-ex
paper · pdf · doi:10.1088/1126-6708/2009/04/133
published as JHEP 0904:133,2009 · 19 pages, 5 figures, 4 tables Clarifications made in text, revisions made to theoretical prediction for total cross section and in Figure 4
arxiv created 2009/04/20 · openalex publication_date 2009/04/30 · arxiv updated 2012/08/27 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Beauty photoproduction in dijet events has been measured at HERA with the ZEUS detector using an integrated luminosity of 126 pb-1. Beauty was identified in events with a muon in the final state by using the transverse momentum of the muon relative to the closest jet. Lifetime information from the silicon vertex detector was also used; the impact parameter of the muon with respect to the primary vertex was exploited to discriminate between signal and background. Cross sections for beauty production as a function of the muon and the jet variables as well as dijet correlations are compared to QCD predictions and to previous measurements. The data are well described by predictions from next-to-leading-order QCD.