Badalov, AlexeyCalvo Gómez, MíriamGarrido Beltrán, LluísGraciani Díaz, RicardoGraugés Pous, EugeniMarin Benito, CarlaPicatoste Olloqui, EduardoRives Molina, Vicente JoséRuiz, Hugo (Ruiz Pérez)Vilasis-Cardona, XavierLHCb Collaboration2019-04-022019-04-022014-08-271550-7998https://hdl.handle.net/2445/131207The first measurement that relates semileptonic and hadronic decay rates of the B + c meson is performed using proton-proton collision data corresponding to 1.0     fb − 1 of integrated luminosity collected with the LHCb detector. The measured value of the ratio of branching fractions, B ( B + c → J / ψ π + ) / B ( B + c → J / ψ μ + ν μ ) = 0.0469 ± 0.0028 ( stat ) ± 0.0046 ( syst ) , is at the lower end of available theoretical predictions.11 p.application/pdfengcc by (c) CERN; LHCb Collaboration, 2014http://creativecommons.org/licenses/by/3.0/es/Física de partículesGran Col·lisionador d'HadronsCol·lisions (Física nuclear)Particle physicsLarge Hadron Collider (France and Switzerland)Collisions (Nuclear physics)info:eu-repo/semantics/article6457512019-04-02info:eu-repo/semantics/openAccess