May 15 – 20, 2017
Shanghai Jiao Tong University
Asia/Shanghai timezone
Please bring you passport details to the registration desk to confirm your participation for the excursions

Bc → BsJ form factors and Bc decays into BsJ in covariant light-front approach

May 16, 2017, 2:00 PM
Haoran 102 (Shanghai Jiao Tong University)

Haoran 102

Shanghai Jiao Tong University

Xuhui Campus


Mr Yu-ji Shi


We suggest to study the $B_s$ and its excitations $B_{sJ}$ in the Bc decays. We calculate the $B_c → B_{sJ}$ and $B_c → B_J$ form factors within the covariant light-front quark model, where the $B_{sJ}$ and $B_J$ denote an s-wave or p-wave $\bar b s$ and $\bar b d$ meson, respectively. The form factors at $q^2 = 0$ are
directly computed while their $q^2$-distributions are obtained by the extrapolation. The derived form factors are then used to study semileptonic $B_c → (B_{sJ} , B_J )\bar lν$ decays, and nonleptonic $B_c → B_{sJ} π$. Branching fractions and polarizations are predicted in the standard model. We find that the branching fractions are sizable and might be accessible at the LHC experiment and future high- energy $e^+e^−$ colliders with a high luminosity at the $Z$-pole. The future experimental measurements are helpful to study the nonperturbative QCD dynamics in the presence of a heavy spectator and also of great value for the spectroscopy study.

Primary authors

Mr Yu-ji Shi Prof. Wei Wang Mr Zhen-Xing Zhao

Presentation materials

There are no materials yet.