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oai:recercat.cat:2445/575852025-12-05T16:39:35Zcom_2072_1057col_2072_478823col_2072_478904col_2072_478917

Search for CP violation in D + → ϕπ + and D_s+to K_S^0{π+} decays Abellan Beteta, Carlos Calvo Gómez, Míriam Camboni, Alessandro Comerma Montells, Albert Oyanguren Campos, Arantza de Garrido Beltrán, Lluís Graciani Díaz, Ricardo Graugés Pous, Eugeni López Asamar, Elias Pérez-Calero Yzquierdo, Antonio Picatoste Olloqui, Eduardo Potterat, Cédric Rives Molina, Vicente José Ruiz, Hugo (Ruiz Pérez) Vázquez Gómez, Ricard Vilasis-Cardona, Xavier Ruiz Valls, Pablo LHCb Collaboration Violació CP (Física nuclear) Hadrons Teoria quàntica de camps Teoria quàntica CP violation (Nuclear physics) Hadrons Quantum field theory Quantum theory A 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)%. 2014-09-23T14:29:33Z 2014-09-23T14:29:33Z 2013-06 2014-09-23T14:29:33Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 1126-6708 https://hdl.handle.net/2445/57585 628992 eng Reproducció del document publicat a: http://dx.doi.org/10.1007/JHEP06(2013)112 Journal of High Energy Physics, 2013, vol. 6, num. 112 http://dx.doi.org/10.1007/JHEP06(2013)112 cc-by (c) LHCb Collaboration, 2013 http://creativecommons.org/licenses/by/3.0/ info:eu-repo/semantics/openAccess 20 p. application/pdf Springer Verlag Articles publicats en revistes (Física Quàntica i Astrofísica)