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dc.contributor.authorCalvo Gómez, Míriam-
dc.contributor.authorCamboni, Alessandro-
dc.contributor.authorComerma Montells, Albert-
dc.contributor.authorGarrido Beltrán, Lluís-
dc.contributor.authorGraciani Díaz, Ricardo-
dc.contributor.authorGraugés Pous, Eugeni-
dc.contributor.authorOyanguren Campos, Arantza de-
dc.contributor.authorPérez-Calero Yzquierdo, Antonio-
dc.contributor.authorPicatoste Olloqui, Eduardo-
dc.contributor.authorPotterat, Cédric-
dc.contributor.authorRives Molina, Vicente José-
dc.contributor.authorRuiz, Hugo (Ruiz Pérez)-
dc.contributor.authorRuiz Valls, Pablo-
dc.contributor.authorVilasis-Cardona, Xavier-
dc.contributor.authorLHCb Collaboration-
dc.description.abstractDirect and mixing-induced CP-violating asymmetries in B0s→K+K− decays are measured for the first time using a data sample of pp collisions, corresponding to an integrated luminosity of 1.0 fb−1, collected with the LHCb detector at a centre-of-mass energy of 7 TeV. The results are C KK  = 0.14 ± 0.11 ± 0.03 and S KK  = 0.30 ± 0.12 ± 0.04, where the first uncertainties are statistical and the second systematic. The corresponding quantities are also determined for B 0 → π + π − decays to be C ππ  = −0.38 ± 0.15 ± 0.02 and S ππ  = −0.71 ± 0.13 ± 0.02, in good agreement with existing measurements.-
dc.format.extent26 p.-
dc.publisherSpringer Verlag-
dc.relation.isformatofReproducció del document publicat a:
dc.relation.ispartofJournal of High Energy Physics, 2013, vol. 183, p. 1-26-
dc.rightscc by (c) LHCb Collaboration, 2013-
dc.sourceArticles publicats en revistes (Física Quàntica i Astrofísica)-
dc.subject.classificationPartícules (Física nuclear)-
dc.subject.classificationSimetria (Física)-
dc.subject.classificationCromodinàmica quàntica-
dc.subject.otherParticles (Nuclear physics)-
dc.subject.otherSymmetry (Physics)-
dc.subject.otherQuantum chromodynamics-
dc.subject.otherViolació CP (Física nuclear)-
dc.titleFirst measurement of time-dependent CP violation in B0s→K+K− decays-
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)
Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))

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