Revisit of tensor-meson nonet in resonance chiral theory

TL;DR

This paper revisits the properties of light-flavor tensor meson resonances using resonance chiral theory, incorporating higher-order corrections, and analyzing experimental and lattice data for masses, decay widths, and radiative decay processes.

Contribution

It introduces a comprehensive analysis of tensor mesons within resonance chiral theory, including higher-order corrections and lattice data comparisons.

Findings

Consistent description of tensor meson masses and decay widths.

Analysis of radiative decay processes of tensor resonances.

Inclusion of light-quark mass and 1/N_C corrections in the model.

Abstract

We study the properties of the lowest multiplet of light-flavor tensor meson resonances, i.e. $f_2(1270)$, $a_2(1320)$, $K_2^*(1430)$, and $f_2'(1525)$, within the resonance chiral theory approach. The higher-order resonance chiral operators, including the light-quark mass and $1/N_C$ corrections, are simultaneously incorporated in our study. The use of resonance chiral expressions allows us to analyze not only the relevant experimental data but also in the meantime the lattice results at unphysical quark masses, including the masses of the lowest multiplet of tensor resonances and their decay widths into two pseudoscalar mesons. In addition, the radiative decays of the tensor resonances into one photon plus one pseudoscalar meson and two photons are also studied.