Decay constants of Bc(nS) and Bc* (nS)

The decay constants of the low lying S-wave B-c mesons, i.e. B-c(nS) and B-c*(nS) with n <= 3, are calculated in the nonrelativistic quark model. The running coupling of the strong interaction is taken into account, and the uncertainties due to varying parameters and losing Lorentz covariance are considered carefully. As a byproduct, the decay constants of the low lying S-wave charmonium and bottomium states are given in the appendixes.

Automated summary

This study calculates the decay constants of low-lying S-wave B-c mesons (B-c(nS) and B-c*(nS) with n <= 3) using a nonrelativistic quark model. It takes into account the running coupling of the strong interaction and carefully considers the uncertainties caused by varying parameters and the loss of Lorentz covariance. In the appendices, the decay constants of low-lying S-wave charmonium and bottomium states are also provided.