Hiller, B.; Osipov, A.A.; Bernard, V.; Blin, A.H.
(Symmetry, Integrability and Geometry: Methods and Applications, 2006)
Low energy hadron phenomenology involving the (u,d,s) quarks is often approached through effective multi-quark Lagrangians with the symmetries of QCD. A very successful approach consists in taking the four-quark ...