Measurement of the branching fraction and $CP$ asymmetry in $B^{+}\to J/\psi {\rho }^{+}$ decays

LHCb collaboration, R. Aaij, C. Abellán Beteta +844

The branching fraction and direct $CP$ asymmetry of the decay $B^{+}\to J/\psi {\rho }^{+}$ are measured using proton-proton collision data collected with the LHCb detector at cent…