Signatures of CP violation in the presence of multiple b-pair production at hadron colliders
We 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 i...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 1995 |
| País: | España |
| Institución: | Universidad de Barcelona |
| Repositorio: | Dipòsit Digital de la UB |
| OAI Identifier: | oai:diposit.ub.edu:2445/12494 |
| Acceso en línea: | https://hdl.handle.net/2445/12494 |
| Access Level: | acceso abierto |
| Palabra clave: | Fenomenologia (Física) Violació càrrega-paritat (Física nuclear) Partícules (Matèria) Acceleradors de partícules Col·lisions (Física nuclear) Phenomenological theory (Physics) CP violation (Nuclear physics) Particles (Nuclear physics) Particle accelerators Collisions (Nuclear physics) |
| Sumario: | We 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. |
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