Relativistic Quark Model Calculation of the l1, l2 Coefficients of the Chiral Lagrangian
arXiv:hep-ph/0212182 · doi:10.1142/9789812704269_0059
Abstract
We briefly report on a relativistic quark model scheme to calculate the O(P^4) pion-pion vertex in the planar approximation and in the chiral limit. The calculation is reduced to the solution of simple integral equations (Bethe-Salpeter like) by an effective use of chiral Ward Identities. Specific model computations are provided.
Proc. V Intnal. Conf. on Quark Confinement and the Hadron Spectrum, Gargnano,Italy 2002