Chiral symmetry and the parity-violating NNπ Yukawa coupling -: art. no. 033006

We construct the complete SU(2) parity-violating (PV) pi ,N,Delta. interaction Lagrangian with one derivative, and calculate the chiral corrections to the PV Yukawa NNpi coupling constant h(pi) through O(1/Lambda (3)(chi)) in the leading order of heavy baryon expansion. We discuss the relationship between the renormalized h(pi), the measured value of h(pi), and the corresponding quantity calculated microscopically from the standard model four-quark PV interaction. We observe that the renormalized h(pi) depends strongly on a number of a priori unknown parameters in the PV effective Lagrangian.