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dc.contributor.authorAbellan Beteta, Carlos-
dc.contributor.authorCalvo Gómez, Míriam-
dc.contributor.authorCamboni, Alessandro-
dc.contributor.authorComerma Montells, Albert-
dc.contributor.authorDomingo Bonal, Francesc-
dc.contributor.authorGarrido Beltrán, Lluís-
dc.contributor.authorGascón Fora, David-
dc.contributor.authorGrabalosa Gándara, Marc-
dc.contributor.authorGraciani Díaz, Ricardo-
dc.contributor.authorGraugés Pous, Eugeni-
dc.contributor.authorLópez Asamar, Elias-
dc.contributor.authorPérez-Calero Yzquierdo, Antonio-
dc.contributor.authorPicatoste Olloqui, Eduardo-
dc.contributor.authorPie Valls, B. (Blai)-
dc.contributor.authorPotterat, Cédric-
dc.contributor.authorPuig Navarro, Albert-
dc.contributor.authorRoselló, M.-
dc.contributor.authorRuiz, Hugo (Ruiz Pérez)-
dc.contributor.authorVázquez Gómez, Ricard-
dc.contributor.authorVilasis-Cardona, Xavier-
dc.contributor.authorLHCb Collaboration-
dc.description.abstractThe decay mode \( B_s^0 \to D_s^{ \mp }{K^{\pm }} \) allows for one of the theoretically cleanest measurements of the CKM angle γ through the study of time-dependent CP violation. This paper reports a measurement of its branching fraction relative to the Cabibbo-favoured mode \( B_s^0 \to D_s^{ - }{\pi^{ + }} \) based on a data sample corresponding to 0.37 fb−1 of proton-proton collisions at \( \sqrt {s} = 7\;{\text{TeV}} \) collected in 2011 with the LHCb detector. In addition, the ratio of B meson production fractions f s /f d , determined from semileptonic decays, together with the known branching fraction of the control channel B 0 → D −π+, is used to perform an absolute measurement of the branching fractions: $ \begin{gathered} \mathcal{B}\left( {B_s^0 \to D_s^{ - }{\pi^{ + }}} \right) = \left( {2.95\pm 0.05\pm 0.17_{{ - 0.22}}^{{ + 0.18}}} \right) \times {10^{{ - 3}}}, \hfill \\ \mathcal{B}\left( {B_s^0 \to D_s^{ \mp }{K^{\pm }}} \right) = \left( {1.90\pm 0.12\pm 0.13_{{ - 0.14}}^{{ + 0.12}}} \right) \times {10^{{ - 4}}}, \hfill \\ \end{gathered} $ where the first uncertainty is statistical, the second the experimental systematic uncertainty, and the third the uncertainty due to f s /f d .-
dc.format.extent18 p.-
dc.publisherSpringer Verlag-
dc.relation.isformatofReproducció del document publicat a:
dc.relation.ispartofJournal of High Energy Physics, 2012, vol. 06, num. 115, p. 1-17-
dc.rightscc by (c) LHCb Collaboration, 2012-
dc.subject.classificationTeoria quàntica de camps-
dc.subject.classificationRelativitat (Física)-
dc.subject.classificationTeoria quàntica-
dc.subject.otherQuantum field theory-
dc.subject.otherRelativity (Physics)-
dc.subject.otherQuantum theory-
dc.titleMeasurements of the branching fractions of the decays B0s→D∓sK± and B0s→D−sπ+-
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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