Measurements of CP violation in the three-body phase space of charmless B± decays
The charmless three-body decay modes B± → K± π+π−, B± → K± K+ K−, B± → π± K+ K− and B± → π± π+ π− are reconstructed using data, corresponding to an integrated luminosity of 3.0 fb−1, collected by the LHCb detector. The inclusive CP asymmetries of these modes are measured to be ACP(B± → K± π+ π−) =...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2014 |
| País: | España |
| Institución: | Universitat Ramon Llull (URL) |
| Repositorio: | DAU Arxiu Digital de la Universitat Ramon Llull |
| OAI Identifier: | oai:dau.url.edu:20.500.14342/3235 |
| Acceso en línea: | http://hdl.handle.net/20.500.14342/3235 https://doi.org/10.1103/PhysRevD.90.112004 |
| Access Level: | acceso abierto |
| Palabra clave: | Gran col·lisionador d'hadrons (França i Suïssa) Partícules (Física nuclear) 539 |
| Sumario: | The charmless three-body decay modes B± → K± π+π−, B± → K± K+ K−, B± → π± K+ K− and B± → π± π+ π− are reconstructed using data, corresponding to an integrated luminosity of 3.0 fb−1, collected by the LHCb detector. The inclusive CP asymmetries of these modes are measured to be ACP(B± → K± π+ π−) = +0.025 ±0.004 ±0.004 ±0.007, ACP (B± → K± K+ K−) = −0.036 ±0.004 ±0.002 ±0.007, ACP (B± → π± π+ π−) = +0.058 ±0.008 ±0.009 ±0.007, ACP (B± → π± K+ K−)= −0.123 ±0.017 ±0.012 ±0.007,where the first uncertainty is statistical, the second systematic, and the third is due to the CP asymmetry of the B± → J/ψ K± reference mode. The distributions of these asymmetries are also studied as functions of position in the Dalitz plot and suggest contributions from rescattering and resonance interference processes. |
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