Calvo Gómez, MíriamCamboni, AlessandroEnterria i Adan, David G. d'Garrido Beltrán, LluísGrabalosa Gándara, MarcGraciani Díaz, RicardoGraugés Pous, EugeniLópez Asamar, EliasMusy, MarcoPérez-Calero Yzquierdo, AntonioPie Valls, B. (Blai)Potterat, CédricPuig Navarro, AlbertRuiz, Hugo (Ruiz Pérez)Vázquez Gómez, RicardVilasis-Cardona, XavierLHCb Collaboration2019-06-182019-06-182011-11-140031-9007https://hdl.handle.net/2445/135284The 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.8 p.application/pdfengcc by (c) CERN; LHCb Collaboration, 2011http://creativecommons.org/licenses/by/3.0/es/Col·lisions (Física)ExperimentsCollisions (Physics)Experimentsinfo:eu-repo/semantics/article6017412019-06-18info:eu-repo/semantics/openAccess