Meson Properties in a renormalizable version of the NJL model

TL;DR

This paper introduces a renormalizable extension of the NJL model, compares it with the traditional regularized version, and calculates mesonic observables to evaluate its effectiveness.

Contribution

It presents a novel renormalizable version of the NJL model and analyzes its advantages and limitations relative to the standard regularized approach.

Findings

Both models become equivalent at large cutoff values.

The extended model offers a consistent renormalization scheme.

Mesonic observables are successfully calculated and compared.

Abstract

In the present paper we implement a non-trivial and renormalizable extension of the NJL model. We discuss the advantages and shortcomings of this extended model compared to a usual effective Pauli-Villars regularized version. We show that both versions become equivalent in the case of a large cutoff. Various relevant mesonic observables are calculated and compared.