1. Institute of Theoretical Physics, Academia Sinica, P.O. Box 2735, Beijing 100080, China;
2. CCAST (World Laboratory), P.O. Box 8730, Beijing 100080, China;
3. Physics Department, Graduate School, Academia Sinica, Beijing 100039, China
Abstract:
Using the SD equation and the covariant BS equation, we investigate dynamical chiral symmetry breaking in the presence of a bare quark mass in a QCD motivated model containing a confining interaction. The bare quark mass m0 corresponding to the physical mass of the pion and corrections to the dynamical quark mass and the pion decay constant due to mo are calculated. The results are consistent with the notion of chiral perturbatiyn and predictions of the current algebra.