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Search for CP violation in D+ -> phi pi(+) and D-s(+) -> K-S(0)pi(+) decays

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Search for CP violation in D+ -> phi pi(+) and D-s(+) -> K-S(0)pi(+) decays

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LHCb Collaboration; Oyanguren Campos, Arantza; Ruiz Valls, Pablo

Aquest document és un/a article, creat/da en: 2013

Este documento está disponible también en : 10.1007/JHEP06(2013)112

A search for C P violation in D+ -> phi pi(+) 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 phi meson mass. A search for a CP-violating asymmetry that varies across the phi mass region of the D+ -> K-K+pi(+) Dalitz plot is also performed, and no evidence for CP violation is found. In addition, the CP asymmetry in the D-s(+) -> K-S(0)pi(+) decay is measured to be (0.61 +/- 0.83 +/- 0.14)%.

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