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http://hdl.handle.net/2445/133697
Title: | Evidence for CP Violation in Time-Integrated D0→h−h+ Decay Rates |
Author: | Abellan Beteta, Carlos Calvo Gómez, Míriam Camboni, Alessandro Comerma Montells, Albert Domingo Bonal, Francesc Garrido Beltrán, Lluís Gascón Fora, David Grabalosa Gándara, Marc Graciani Díaz, Ricardo Graugés Pous, Eugeni López Asamar, Elias Musy, Marco Pérez-Calero Yzquierdo, Antonio Picatoste Olloqui, Eduardo Pie Valls, B. (Blai) Potterat, Cédric Puig Navarro, Albert Roselló, M. Ruiz, Hugo (Ruiz Pérez) Vázquez Gómez, Ricard Vilasis-Cardona, Xavier LHCb Collaboration |
Keywords: | Física de partícules Experiments Particle physics Experiments |
Issue Date: | 12-Mar-2012 |
Publisher: | American Physical Society |
Abstract: | A search for time-integrated C P violation in D 0 → h − h + ( h = K , π ) decays is presented using 0.62 fb − 1 of data collected by LHCb in 2011. The flavor of the charm meson is determined by the charge of the slow pion in the D * + → D 0 π + and D * − → ¯¯¯ D 0 π − decay chains. The difference in C P asymmetry between D 0 → K − K + and D 0 → π − π + , Δ A C P ≡ A C P ( K − K + ) − A C P ( π − π + ) , is measured to be [ − 0.82 ± 0.21 ( stat ) ± 0.11 ( syst ) ] % . This differs from the hypothesis of C P conservation by 3.5 standard deviations. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.108.111602 |
It is part of: | Physical Review Letters, 2012, vol. 108, num. 11, p. 111602 |
URI: | http://hdl.handle.net/2445/133697 |
Related resource: | https://doi.org/10.1103/PhysRevLett.108.111602 |
ISSN: | 0031-9007 |
Appears in Collections: | Articles publicats en revistes (Física de la Matèria Condensada) Articles publicats en revistes (Enginyeria Electrònica i Biomèdica) Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB)) Articles publicats en revistes (Física Quàntica i Astrofísica) |
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