Abellan Beteta, CarlosCamboni, AlessandroComerma Montells, AlbertGarrido Beltrán, LluísGraciani Díaz, RicardoGraugés Pous, EugeniLópez Asamar, EliasPérez-Calero Yzquierdo, AntonioPicatoste Olloqui, EduardoPotterat, CédricRives Molina, Vicente JoséRuiz, Hugo (Ruiz Pérez)Vázquez Gómez, RicardCalvo Gómez, MíriamOyanguren Campos, Arantza deRuiz Valls, PabloVilasis-Cardona, XavierLHCb Collaboration2019-04-082019-04-082013-06-011550-7998https://hdl.handle.net/2445/131839The first observation of the decay B 0 s → ¯¯¯ D 0 K − π + is reported. The analysis is based on a data sample, corresponding to an integrated luminosity of 1.0     fb − 1 of p p collisions, collected with the LHCb detector. The branching fraction relative to that of the topologically similar decay B 0 → ¯¯¯ D 0 π + π − is measured to be B ( B 0 s → ¯¯¯ D 0 K − π + ) B ( B 0 → ¯¯¯ D 0 π + π − ) = 1.18 ± 0.05 ( stat ) ± 0.12 ( syst ) . In addition, the relative branching fraction of the decay B 0 → ¯¯¯ D 0 K + π − is measured to be B ( B 0 → ¯¯¯ D 0 K + π − ) B ( B 0 → ¯¯¯ D 0 π + π − ) = 0.106 ± 0.007 ( stat ) ± 0.008 ( syst ) .10 p.application/pdfengcc by (c) CERN; LHCb Collaboration, 2013http://creativecommons.org/licenses/by/3.0/es/Física de partículesExperimentsParticle physicsExperimentsinfo:eu-repo/semantics/article6289972019-04-08info:eu-repo/semantics/openAccess