Search for Time-Dependent CP Violation in D0 →π+π-π0 Decays
A measurement of time-dependent CP violation in D0→π+π-π0 decays using a pp collision data sample collected by the LHCb experiment in 2012 and from 2015 to 2018, corresponding to an integrated luminosity of 7.7 fb-1, is presented. The initial flavor of each D0 candidate is determined from the charge...
| Autores: | , , , |
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| Tipo de documento: | artigo |
| Data de publicação: | 2024 |
| País: | España |
| Recursos: | Universitat Ramon Llull (URL) |
| Repositório: | DAU Arxiu Digital de la Universitat Ramon Llull |
| OAI Identifier: | oai:dau.url.edu:20.500.14342/6051 |
| Acesso em linha: | http://hdl.handle.net/20.500.14342/6051 https://doi.org/10.1103/PhysRevLett.133.101803 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Electroweak interaction Charm quark Charmed mesons CP violation Gran col·lisionador d'hadrons (França i Suïssa) 530.1 539 |
| Resumo: | A measurement of time-dependent CP violation in D0→π+π-π0 decays using a pp collision data sample collected by the LHCb experiment in 2012 and from 2015 to 2018, corresponding to an integrated luminosity of 7.7 fb-1, is presented. The initial flavor of each D0 candidate is determined from the charge of the pion produced in the D∗(2010)+→D0π+ decay. The decay D0→K-π+π0 is used as a control channel to validate the measurement procedure. The gradient of the time-dependent CP asymmetry ΔY in D0→π+π-π0 decays is measured to be ΔY=(-1.3±6.3±2.4)×10-4, where the first uncertainty is statistical and the second is systematic, which is compatible with CP conservation. |
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