Improved perturbative QCD study of the decay $B_c^{+}\to {\eta }_c{L}^{+}$

Wen-Jing Zhang, Xin Liu

We perform an improved perturbative QCD study of the decays $B_c^{+}\to {\eta }_c{L}^{+}$,where $L$ denotes the light ground-state pseudoscalar, vector mesons and the corresponding $p$-wave…