Badalov, AlexeyCalvo Gómez, MíriamGarrido Beltrán, LluísGascón Fora, DavidGraciani Díaz, RicardoGraugés Pous, EugeniMarin Benito, CarlaPicatoste Olloqui, EduardoRives Molina, Vicente JoséRuiz, Hugo (Ruiz Pérez)Vilasis-Cardona, XavierLHCb Collaboration2019-05-132019-05-132014-09-290031-9007https://hdl.handle.net/2445/133088Three-body B + → p ¯ p K + and B + → p ¯ p π + decays are studied using a data sample corresponding to an integrated luminosity of 3.0     fb − 1 collected by the LHCb experiment in proton-proton collisions at center-of-mass energies of 7 and 8 TeV. Evidence of C P violation in the B + → p ¯ p K + decay is found in regions of the phase space, representing the first measurement of this kind for a final state containing baryons. Measurements of the forward-backward asymmetry of the light meson in the p ¯ p rest frame yield A FB ( p ¯ p K + , m p ¯ p < 2.85     GeV / c 2 ) = 0.495 ± 0.012     ( stat ) ± 0.007     ( syst ) and A FB ( p ¯ p π + , m p ¯ p < 2.85     GeV / c 2 ) = − 0.409 ± 0.033     ( stat ) ± 0.006     ( syst ) . In addition, the branching fraction of the decay B + → ¯ Λ ( 1520 ) p is measured to be B ( B + → ¯ Λ ( 1520 ) p ) = ( 3.15 ± 0.48     ( stat ) ± 0.07     ( syst ) ± 0.26     ( BF ) ) × 1 0 − 7 , where BF denotes the uncertainty on secondary branching fractions.9 p.application/pdfengcc by (c) CERN; LHCb Collaboration, 2014http://creativecommons.org/licenses/by/3.0/es/Física de partículesExperimentsParticle physicsExperimentsinfo:eu-repo/semantics/article6457452019-05-13info:eu-repo/semantics/openAccess