The parity-violating pion-nucleon coupling constant from a realistic threeflavor Skyrme model

We study the parity-violating pion-nucleon coupling G(pi) in the framework of a realistic three flavor Skryme model. We find a sizeable enhancement of G(pi) similar or equal to 0.8 ... 1.3 . 10(-7) compared to previous calcul ations in two-flavor models with vector mesons. This strangeness enhancemen t stems from induced kaon fields of the chiral soliton and the non-monotono us dependence on symmetry breaking of the nucleon matrix element of the fla vor singlet piece of the operator associated with these induced fields. Bot h features are sensitive to four quark operators including an (s) over bar s pair. (C) 1999 Elsevier Science B.V. All rights reserved.