Light-front quark model analysis of heavy meson radiative decays

We present the magnetic dipole($M1$) transitions $V\to P\gamma$ of various heavy-flavored mesons such as $(D,D^{\ast },D_s,D_s^{\ast },{\eta }_c,J\mathrm{/}\psi )$ and $(B,B^{\ast },B_s,B_s^{\ast },{\eta }_b,\mathrm{{\rm Y}})$ using the light-front quark model constrained by the variational principle for the QCD-motivated effective Hamiltonian. The weak decay constants of heavy mesons and the decay widths for $V\to P\gamma$ are calculated. The radiative decay for $\mathrm{{\rm Y}}\to {\eta }_b\gamma$ process is found to be very helpful to determine the unmeasured mass of ${\eta }_b$. Our numerical results are overall in good agreement with the available experimental data as well as other theoretical model calculations.