Light-front quark model analysis of heavy meson radiative decays

TL;DR

This paper uses a light-front quark model constrained by a variational principle to analyze radiative decays of heavy mesons, providing predictions that align well with experimental data and aiding in unmeasured mass determinations.

Contribution

It introduces a QCD-motivated light-front quark model with variational constraints to study heavy meson radiative decays, offering improved theoretical predictions.

Findings

Calculated decay widths for various heavy mesons.

Good agreement with experimental data.

Predicted the unmeasured mass of η_b using Υ→η_bγ decay.

Abstract

We present the magnetic dipole($M1$) transitions $V\to P\gamma$ of various heavy-flavored mesons such as $(D,D^*,D_s,D^{*}_s,\eta_c, J/\psi)$ and $(B,B^*,B_s,B^*_s,\eta_b,\Upsilon)$ 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 $\Upsilon\to\eta_{b}\gamma$ 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.