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Search for CP violation in D + → ϕπ + and D_s+to K_S^0{π+} decays
LHCb Collaboration; Abellan Beteta, Carlos; Calvo Gómez, M.; Camboni, Alessandro; Comerma Montells, Albert; Oyanguren, A.; Garrido Beltrán, Lluís; Graciani Díaz, Ricardo; Graugés Pous, Eugeni; López Asamar, E.; Pérez-Calero Yzquierdo, Antonio; Picatoste Olloqui, Eduardo; Potterat, Cédric; Rives Molina, V.; Ruiz, Hugo (Ruiz Pérez); Vázquez Gómez, R.; Vilasis-Cardona, X.; Ruiz Valls, P.
Universitat de Barcelona
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)%.
Violació CP (Física nuclear)
Hadrons
Teoria quàntica de camps
Teoria quàntica
CP violation (Nuclear physics)
Hadrons
Quantum field theory
Quantum theory
cc by, (c) LHCb Collaboration, 2013
Article
info:eu-repo/semantics/publishedVersion
Springer Verlag
         

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