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First Observation of CP Violation in the Decays of B-s(0) Mesons

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First Observation of CP Violation in the Decays of B-s(0) Mesons

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dc.contributor.author LHCb Collaboration
dc.contributor.author Oyanguren Campos, Arantza
dc.contributor.author Ruiz Valls, Pablo
dc.date.accessioned 2014-03-31T13:09:21Z
dc.date.available 2014-03-31T13:09:21Z
dc.date.issued 2013
dc.identifier.citation LHCb Collaboration Oyanguren Campos, Arantza Ruiz Valls, Pablo 2013 First Observation of CP Violation in the Decays of B-s(0) Mesons Physical Review Letters 110 22 221601 - 1 221601 - 9
dc.identifier.uri http://hdl.handle.net/10550/33880
dc.description.abstract Using pp collision data corresponding to an integrated luminosity of 1.0 fb(-1) and collected by LHCb in 2011 at a center-of-mass energy of 7 TeV, we report the measurement of direct CP violation in B-s(0) -> K-pi(+) decays, A(CP) (B-s(0) -> K-pi(+)) = 0.27 +/- 0.04(stat) +/- 0.01(syst), with significance exceeding 5 standard deviations. This is the first observation of CP violation in the decays of B-s(0) mesons. Furthermore, we provide an improved determination of direct CP violation in B-0 -> K+pi(-) decays, A(CP)(B-0 -> K+pi(-) ) = -0.080 +/- 0.007(stat) +/- 0.003(syst), which is the most precise measurement of this quantity to date.
dc.relation.ispartof Physical Review Letters, 2013, vol. 110, num. 22, p. 221601 - 1-221601 - 9
dc.subject Física nuclear
dc.title First Observation of CP Violation in the Decays of B-s(0) Mesons
dc.type journal article es_ES
dc.date.updated 2014-03-31T13:09:21Z
dc.identifier.doi 10.1103/PhysRevLett.110.221601
dc.identifier.idgrec 094077
dc.rights.accessRights open access es_ES
dc.identifier.url 10.1103/PhysRevLett.110.221601

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