J/psi dissociation by light mesons in an extended Nambu Jona-Lasinio model

TL;DR

This paper proposes a new model based on the extended Nambu Jona-Lasinio framework to study J/psi meson dissociation by light mesons, incorporating chiral symmetry, mesonic interactions, and confinement effects.

Contribution

It introduces an alternative approach that naturally includes chiral symmetry, abnormal parity interactions, and mesonic form factors derived from quark sub-structure, with calculated dissociation cross sections.

Findings

Dissociation cross sections for J/psi by pions and rho mesons are evaluated.

The model successfully incorporates analytic confinement for light quarks.

Results provide insights into J/psi suppression mechanisms in heavy-ion collisions.

Abstract

An alternative model for the dissociation of the J/psi is proposed. Chiral symmetry is properly implemented. Abnormal parity interactions and mesonic form factors naturally arise from the underlying quark sub-structure. Analytic confinement for the light quarks is generated by appropriately chosen the quark interaction kernels. Dissociation cross sections of the J/psi by either a pion or a rho meson are then evaluated and discussed.