Inclusive semileptonic decays of the B-c meson

The electron energy spectra and decay widths of inclusive semileptonic decays of the B-c meson are studied in the ACCMM model. We obtain the value of the Fermi motion parameter p(F) using the quantum-mechanical variational method. The decay widths are significantly affected by the bound state effects inside the B-c meson. As a result, the semileptonic decay rate of B-c through c-quark decay is about the same as that through b-quark decay.