Semileptonic decays of $B_c$ meson to S-wave charmonium states in the perturbative QCD approach

Zhou Rui, Hong Li, Guang-xin Wang +1

Inspired by the recent measurement of the ratio of $B_c$ branching fractions to $J/\psi {\pi }^{+}$ and $J/\psi {\mu }^{+}{\nu }_{\mu }$ final states at the LHCb detector, we study the semileptonic decays of $B_c…