The investigation of semileptonic Bc meson decays to P-wave charmonia using light cone QCD sum rules

Heavy flavoured hadron physics research has become very popular since many charmonium-like states have been discovered at B-factories. Among the B mesons B_c meson is a very interesting particle due to its two different kind of heavy quark constituents and it is a laboratory for probing heavy quark physics. Moreover, they decay into charmonia and hence their decays can be used to analyze possible exotic charmonia. In this study, QCD sum rules method is used to analyze the semileptonic decays of B_c mesons into P wave charmonia. The required distribution amplitudes for the charmonia will be taken from a quark model computation. The obtained decay rates for the ground state and excited charmonia are compared with the results found in the literature.