$B^{*}_c$ meson parameters and radiative decay width within the covariant confined quark model

TL;DR

This paper predicts the parameters and radiative decay widths of the $B^{*}_c$ meson using a covariant confined quark model, providing estimates for its mass and decay constant and analyzing decay width sensitivities.

Contribution

It introduces new parameter predictions for the $B^{*}_c$ meson and calculates its radiative decay widths within the covariant confined quark model, comparing with other theoretical results.

Findings

Predicted $B^{*}_c$ meson mass: 6329 ± 10 MeV

Calculated decay constant: 535.5 ± 57.8 MeV

Decay width is highly sensitive to meson mass

Abstract

In this work we tried to predict the parameters of $B^{*}_c$ meson. Simple assumptions gave us following parametres $m_{B_{c}^{*}}=6329\pm 10$ MeV and $f_{B_{c}^{*}}= 535.5\pm57.8$ MeV (for $\Lambda_{B_{c}^{*}}=2.26\pm 0.14$ GeV in covariant confined quark model). We calculated widths of radiative decays of $B^*_{q}$ mesons, where $q=u/d,s,c$ and compared them with other theoretical works. It was shown that the width of the $B_{c}^{*}$ meson very sensitive to the mass $m_{B_{c}^{*}}$ as expected and less to the size parameter $\Lambda_{B_{c}^{*}}$.