# Strong coupling constants and radiative decays of the heavy tensor mesons

## TL;DR

This paper calculates the strong coupling constants and radiative decay widths of heavy tensor mesons using three-point QCD sum rules, providing insights into their decay mechanisms and interactions.

## Contribution

It introduces a comprehensive analysis of tensor-vector-pseudoscalar vertices and computes their coupling constants and decay widths within the QCD sum rules framework.

## Key findings

- Calculated strong coupling constants for various heavy tensor mesons.
- Determined radiative decay widths based on the coupling constants.
- Provided analytical functions for strong form factors as a function of Q^2.

## Abstract

In this article, we analyze tensor-vector-pseudoscalar(TVP) type of vertices $D_{2}^{*+}D^{+}\rho$, $D_{2}^{*0}D^{0}\rho$, $D_{2}^{*+}D^{+}\omega$, $D_{2}^{*0}D^{0}\omega$, $B_{2}^{*+}B^{+}\rho$, $B_{2}^{*0}B^{0}\rho$, $B_{2}^{*+}B^{+}\omega$, $B_{2}^{*0}B^{0}\omega$, $B_{s2}^{*}B_{s}\phi$ and $D_{s2}^{*}D_{s}\phi$, in the frame work of three point QCD sum rules. According to these analysis, we calculate their strong form factors which are used to fit into analytical functions of $Q^{2}$. Then, we obtain the strong coupling constants by extrapolating these strong form factors into deep time-like regions. As an application of this work, the coupling constants for radiative decays of these heavy tensor mesons are also calculated at the point of $Q^{2}=0$. With these coupling constants, we finally calculate the radiative decay widths of these tensor mesons.