Ratios of vector and pseudoscalar $B$ meson decay constants in the light-cone quark model

Abstract

We study the decay constants of pseudoscalar and vector $B$ meson in the framework of light-cone quark model (LCQM). We apply the variational method to the relativistic Hamiltonian with the Gaussian-type trial wave function to obtain the values of $\beta$ (scale parameter). Then with the help of known values of constituent quark masses, we obtain the numerical results for the decay constants $f_P$ and $f_V$, respectively. We compare our numerical results with the existing experimental data.

Comments: 4 pages, 2 figures. Prepared for proceedings of Light Cone Conference 2017 held in Mumbai September 18-22, 2017. To appear in Few Body Systems