A study of CP violation in the decays B±→[K+K-π+π-]Dh± (h= K, π) and B±→[π+π-π+π-]Dh±
The first study of CP violation in the decay mode B± →[K +K −π+π−]Dh±, with h = K,π, is presented, exploiting a data sample of proton–proton collisions collected by the LHCb experiment that corresponds to an integrated luminosity of 9 fb−1. The analysis is performed in bins of phase space, which are...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2023 |
| País: | España |
| Institución: | Universitat Ramon Llull (URL) |
| Repositorio: | DAU Arxiu Digital de la Universitat Ramon Llull |
| OAI Identifier: | oai:dnet:dau_________::596956a4d53043957b35783394bc0b59 |
| Acceso en línea: | https://hdl.handle.net/20.500.14342/6415 https://doi.org/10.1140/epjc/s10052-023-11560-5 |
| Access Level: | acceso abierto |
| Palabra clave: | Experimental Particle Physics Experimental Nuclear Physics Nuclear and Particle Physics Nuclear Physics Particle Physics Party Research Effective Field Theory in Particle Physics Gran col·lisionador d'hadrons (França i Suïssa) 51 53 539 |
| Sumario: | The first study of CP violation in the decay mode B± →[K +K −π+π−]Dh±, with h = K,π, is presented, exploiting a data sample of proton–proton collisions collected by the LHCb experiment that corresponds to an integrated luminosity of 9 fb−1. The analysis is performed in bins of phase space, which are optimised for sensitivity to local CP asymmetries. CP-violating observables that are sensitive to the angle γ of the Unitarity Triangle are determined. The analysis requires external information on charm-decay parameters, which are currently taken from an amplitude analysis of LHCb data, but can be updated in the future when direct measurements become available. Measurements are also performed of phase-space integrated observables for B± →[K +K −π+π−]Dh± and B± →[π+π−π+π−]Dh± decays. |
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