Halzen, FrancisGonzález García, Ma. ConcepciónStelzer, T.Vázquez, R. A.2010-05-062010-05-0619950556-2821https://hdl.handle.net/2445/12494We calculate the production of two b-quark pairs in hadron collisions. Sources of multiple pairs are multiple interactions and higher order perturbative QCD mechanisms. We subsequently investigate the competing effects of multiple b-pair production on measurements of CP violation: (i) the increase in event rate with multiple b-pair cross sections which may reach values of the order of 1 b in the presence of multiple interactions and (ii) the dilution of b versus b tagging efficiency because of the presence of events with four B mesons. The impact of multiple B-meson production is small unless the cross section for producing a single pair exceeds 1 mb. We show that even for larger values of the cross section the competing effects (i) and (ii) roughly compensate so that there is no loss in the precision with which CP-violating CKM angles can be determined.6 p.application/pdfeng(c) The American Physical Society, 1995Fenomenologia (Física)Violació càrrega-paritat (Física nuclear)Partícules (Matèria)Acceleradors de partículesCol·lisions (Física nuclear)Phenomenological theory (Physics)CP violation (Nuclear physics)Particles (Nuclear physics)Particle acceleratorsCollisions (Nuclear physics)info:eu-repo/semantics/article551516info:eu-repo/semantics/openAccess