Light-front quark-model analysis of heavy-meson radiative decays

We present the magnetic dipole (M1) transitions V → Pγ of various heavy-flavored mesons, such as (D,D^*,D _s,D^*_s,η_cJ/Ψ) and (B, B^*, B_s, B^*_s, η_b;, Υ), by 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 → Pγ are calculated. The radiative decay for the Υ → η_b γ process is found to be very helpful in determining the unmeasured mass of η_b Our numerical results are overall in good agreement with the available experimental data and with the results of other theoretical model calculations.