Measurements of CP-Violating Asymmetries in B0 → a±1(1260)π∓ Decays
We present measurements of C P -violating asymmetries in the decay B 0 → a ± 1 ( 1260 ) π ∓ with a ± 1 ( 1260 ) → π ∓ π ± π ± . The data sample corresponds to 384 × 10 6 B ¯¯¯ B pairs collected with the BABAR detector at the PEP-II asymmetric B factory at SLAC. We measure the C P -violating asymmetr...
| Autores: | , |
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| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2007 |
| País: | España |
| Recursos: | Universidad de Barcelona |
| Repositorio: | Dipòsit Digital de la UB |
| OAI Identifier: | oai:diposit.ub.edu:2445/131433 |
| Acesso em linha: | https://hdl.handle.net/2445/131433 |
| Access Level: | acceso abierto |
| Palavra-chave: | Física de partícules Experiments Violació CP (Física nuclear) Particle physics CP violation (Nuclear physics) |
| Resumo: | We present measurements of C P -violating asymmetries in the decay B 0 → a ± 1 ( 1260 ) π ∓ with a ± 1 ( 1260 ) → π ∓ π ± π ± . The data sample corresponds to 384 × 10 6 B ¯¯¯ B pairs collected with the BABAR detector at the PEP-II asymmetric B factory at SLAC. We measure the C P -violating asymmetry A a 1 π C P = − 0.07 ± 0.07 ± 0.02 , the mixing-induced C P violation parameter S a 1 π = 0.37 ± 0.21 ± 0.07 , the direct C P violation parameter C a 1 π = − 0.10 ± 0.15 ± 0.09 , and the parameters Δ C a 1 π = 0.26 ± 0.15 ± 0.07 and Δ S a 1 π = − 0.14 ± 0.21 ± 0.06 . From these measured quantities we determine the angle α eff = 78.6 ° ± 7.3 ° . |
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