Strong decays of radially excited mesons in a chiral approach

TL;DR

This paper develops a chiral Lagrangian framework to analyze the decays of radially excited pseudoscalar and vector mesons, fitting parameters with existing data and exploring implications for exotic states.

Contribution

It introduces a general chiral Lagrangian for excited mesons and provides predictions and analysis for their decay processes and potential exotic states.

Findings

Parameters fitted using data and 3P0 model

Finite-width effects examined

Predictions for previously unstudied mesons

Abstract

We study radial excitations of pseudoscalar and vector (q bar q) mesons within a chiral approach. We derive a general form for a chiral Lagrangian describing processes involving excited pseudoscalar and vector mesons. The parameters of the chiral Lagrangian are fitted using data and previous calculations in the framework of the 3P0 model. Finite-width effects are examined and predictions for mesons previously not discussed are given. Available experimental data is analyzed whenever possible. Possible hints for exotic mesons and open interpretation-issues are discussed.