2026-04-17T02:19:52Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/1333502025-11-21T05:47:39Zcom_2072_1057col_2072_478823col_2072_478904col_2072_478917

RECERCAT author Abellan Beteta, Carlos author Calvo Gómez, Míriam author Camboni, Alessandro author Comerma Montells, Albert author Garrido Beltrán, Lluís author Graciani Díaz, Ricardo author Graugés Pous, Eugeni author López Asamar, Elias author Oyanguren Campos, Arantza de author Pérez-Calero Yzquierdo, Antonio author Picatoste Olloqui, Eduardo author Potterat, Cédric author Rives Molina, Vicente José author Ruiz, Hugo (Ruiz Pérez) author Ruiz Valls, Pablo author Vázquez Gómez, Ricard author Vilasis-Cardona, Xavier author LHCb Collaboration 2019-05-17T10:39:44Z2019-05-17T10:39:44Z2013-05-302019-05-17T10:39:44Z Using p p collision data corresponding to an integrated luminosity of 1.0 fb − 1 and collected by LHCb in 2011 at a center-of-mass energy of 7 TeV, we report the measurement of direct C P violation in B 0 s → K − π + decays, A C P ( B 0 s → K − π + ) = 0.27 ± 0.04 ( stat ) ± 0.01 ( syst ) , with significance exceeding 5 standard deviations. This is the first observation of C P violation in the decays of B 0 s mesons. Furthermore, we provide an improved determination of direct C P violation in B 0 → K + π − decays, A C P ( B 0 → K + π − ) = − 0.080 ± 0.007 ( stat ) ± 0.003 ( syst ) , which is the most precise measurement of this quantity to date. cc by (c) CERN; LHCb Collaboration, 2013 http://creativecommons.org/licenses/by/3.0/es/ info:eu-repo/semantics/openAccess Física de partícules Experiments Particle physics Experiments First Observation of CP Violation in the Decays of B0s Mesons info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion