Eur. Phys. J. A (2007) 31: 711-713
https://doi.org/10.1140/epja/i2006-10243-1

QNP 2006

Relativistic NJL model with light and heavy quarks

¹ Departamento de Ciências Naturais, Universidade Federal de São João del Rei, 36301-160, São João del Rei, Brazil
² Departamento de Fısica Atómica, Molecular y Nuclear, Universidad de Granada, E-18071, Granada, Spain

^* e-mail: motaal@ufsj.edu.br

Received: 23 November 2006
Accepted: 30 November 2006
Published online: 12 March 2007

Abstract

We study the Nambu-Jona-Lasinio model with light and heavy quarks in a relativistic approach. We emphasize relevant regularization issues as well as the transition from light to heavy quarks. The approach of the electromagnetic meson form factor to the Isgur-Wise function in the heavy-quark limit is also discussed.