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Title: | Determination of fs/fd for 7 TeV pp Collisions and Measurement of the B0→D−K+ Branching Fraction |
Author: | Calvo Gómez, Míriam Camboni, Alessandro Enterria i Adan, David G. d' Garrido Beltrán, Lluís Grabalosa Gándara, Marc Graciani Díaz, Ricardo Graugés Pous, Eugeni López Asamar, Elias Musy, Marco Pérez-Calero Yzquierdo, Antonio Pie Valls, B. (Blai) Potterat, Cédric Puig Navarro, Albert Ruiz, Hugo (Ruiz Pérez) Vázquez Gómez, Ricard Vilasis-Cardona, Xavier LHCb Collaboration |
Keywords: | Col·lisions (Física) Experiments Collisions (Physics) Experiments |
Issue Date: | 14-Nov-2011 |
Publisher: | American Physical Society |
Abstract: | The relative abundance of the three decay modes B 0 → D − K + , B 0 → D − π + , and B 0 s → D − s π + produced in 7 TeV p p collisions at the LHC is determined from data corresponding to an integrated luminosity of 35 pb − 1 . The branching fraction of B 0 → D − K + is found to be B ( B 0 → D − K + ) = ( 2.01 ± 0.18 stat ± 0.14 syst ) × 10 − 4 . The ratio of fragmentation fractions f s / f d is determined through the relative abundance of B 0 s → D − s π + to B 0 → D − K + and B 0 → D − π + , leading to f s / f d = 0.253 ± 0.017 ± 0.017 ± 0.020 , where the uncertainties are statistical, systematic, and theoretical, respectively. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.107.211801 |
It is part of: | Physical Review Letters, 2011, vol. 107, num. 21, p. 211801 |
URI: | http://hdl.handle.net/2445/135284 |
Related resource: | https://doi.org/10.1103/PhysRevLett.107.211801 |
ISSN: | 0031-9007 |
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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