Effective Lagrangian approach to multi-quark interactions

Abstract

In this workshop we have presented the results obtained in the three-flavour ($N_f=3$) Nambu--Jona-Lasinio model Lagrangian which includes all non-derivative vertices at NLO in the $1/N_c$ expansion of spin zero multi-quark interactions. In particular the role played by the explicit chiral symmetry breaking interactions has been discussed in comparison with previous model Lagrangians.

4 p, prepared for the Workshop Bled 2014: "Quark masses and Hadron spectra",Bled (Slovenia), July 6-13, 2014