The dissociation of the J/psi by light mesons and chiral symmetry

TL;DR

This paper investigates how chiral symmetry influences the dissociation of J/psi particles by light mesons, using a chiral-symmetric Lagrangian model to analyze the effects of pions and rho mesons.

Contribution

It introduces a detailed analysis of chiral symmetry effects on J/psi dissociation and develops a Lagrangian model incorporating soft-pion theorems and abnormal parity content.

Findings

Chiral symmetry constrains pion-induced dissociation dynamics.

The soft-pion theorem is integrated into a chiral-symmetric model.

Dissociation by rho mesons is also analyzed.

Abstract

The implication of chiral symmetry for the pion-induced dissociation of the J/psi is examined in detail. It is shown how the low-energy dynamics of pions, constrained by chiral symmetry, affect the dissociation cross-section. The derived soft-pion theorem is then integrated into a Lagrangian model which includes also abnormal parity content and chiral-symmetric form factors. Dissociation by the rho meson is also considered.