Abellan Beteta, CarlosCalvo Gómez, MíriamCamboni, AlessandroComerma Montells, AlbertOyanguren Campos, Arantza deGarrido Beltrán, LluísGraciani Díaz, RicardoGraugés Pous, EugeniLópez Asamar, EliasPérez-Calero Yzquierdo, AntonioPicatoste Olloqui, EduardoPotterat, CédricRives Molina, Vicente JoséRuiz, Hugo (Ruiz Pérez)Vázquez Gómez, RicardVilasis-Cardona, XavierRuiz Valls, PabloLHCb Collaboration2014-09-232014-09-232013-061126-6708https://hdl.handle.net/2445/57585A search for CP violation in D + → ϕπ + decays is performed using data collected in 2011 by the LHCb experiment corresponding to an integrated luminosity of 1.0 fb−1 at a centre of mass energy of 7 TeV. The CP -violating asymmetry is measured to be (−0.04 ± 0.14 ± 0.14)% for candidates with K − K + mass within 20 MeV/c 2 of the ϕ meson mass. A search for a CP -violating asymmetry that varies across the ϕ mass region of the D + → K − K + π + Dalitz plot is also performed, and no evidence for CP violation is found. In addition, the CP asymmetry in the D+s→K0Sπ+ decay is measured to be (0.61 ± 0.83 ± 0.14)%.20 p.application/pdfengcc-by (c) LHCb Collaboration, 2013http://creativecommons.org/licenses/by/3.0/Violació CP (Física nuclear)HadronsTeoria quàntica de campsTeoria quànticaCP violation (Nuclear physics)HadronsQuantum field theoryQuantum theoryinfo:eu-repo/semantics/article6289922014-09-23info:eu-repo/semantics/openAccess