Light-front quark model analysis of heavy meson radiative decays

We present the magnetic dipole($M1$) transitions $V\to Pγ$ of various heavy-flavored mesons such as $(D,D^*,D_s,D^{*}_s,η_c, J/ψ)$ and $(B,B^*,B_s,B^*_s,η_b,Υ)$ 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 $V\to Pγ$ are calculated. The radiative decay for $Υ\toη_{b}γ$ process is found to be very helpful to determine the unmeasured mass of $η_b$. Our numerical results are overall in good agreement with the available experimental data as well as other theoretical model calculations.

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