On the Mass and Decay Constant of $K_2^*(1430)$ Tensor Meson

TL;DR

This paper uses QCD sum rules to calculate the mass and decay constant of the $K_2^*(1430)$ tensor meson, finding results consistent with experimental data and analyzing SU(3) symmetry breaking effects.

Contribution

It provides the first QCD sum rules calculation of the $K_2^*(1430)$ meson's properties, including the impact of SU(3) symmetry breaking.

Findings

Mass and decay constant align with experimental data

SU(3) symmetry breaking affects decay constant by about 20%

QCD sum rules effectively describe tensor meson properties

Abstract

The mass and decay constant of the ground state strange tensor meson $K_2^*(1430)$ with $I(J^P)=1/2(2^+)$ is calculated using the QCD sum rules method. The results are consistent with the experimental data. It is found that SU(3) symmetry breaking effect constitutes about $20^0/_0$ of the decay constant.