Quasi-two-body decays $B_c^{+}\to {\chi }_{c0,c1}[\rho (K^{\ast })\to ]\pi \pi (K\pi )$ in the PQCD approach

Jun Deng, Xian-Qiao Yu

We study the quasi-two-body decays $B_c^{+}\to {\chi }_{c0,c1}[\rho (K^{\ast })\to ]{\pi }^{+}{\pi }^0(K^0{\pi }^{+})$ in the perturbative QCD framework at leading order. The $\pi \pi$ and $K\pi$ pairs are produced via th…