Radiative decays with a0(980) and f0(980) from ChPT at order p^4

TL;DR

This paper uses Resonance Chiral Theory at order p^4 to describe radiative decays involving scalar mesons a0(980) and f0(980), providing a unified framework for analyzing decay distributions and flavor symmetry effects.

Contribution

It offers a consistent theoretical description of scalar meson radiative decays within ChPT at order p^4, emphasizing the role of flavor SU(3) symmetry.

Findings

Successful description of pi0 pi0 invariant mass distribution in phi decays

Analysis of pi0 eta distribution in phi decays

Implications for flavor SU(3) symmetry in scalar mesons

Abstract

A consistent description of the pi0 pi0 invariant mass distribution in the phi(1020) -> f0(980) gamma -> pi0 pi0 gamma decay and the pi0 eta in phi(1020) -> a0(980) gamma -> pi0 eta gamma is suggested. A search for the consequences of the flavor SU(3) symmetry for the scalar mesons can be based on such an analysis. In order to accurately treat the pseudoscalar meson dynamics, which is very important for the scalar meson decays, we employ Resonance Chiral Theory.