Donoghue, JFHolstein, BR2024-04-262024-04-261981https://hdl.handle.net/20.500.14394/40819Published version is located at http://prl.aps.org/abstract/PRL/v46/i25/p1603_1From recent developments in the area of nuclear parity nonconservation we extract evidence for (1) SU(3) /soft-pion breaking in weak pionic vertices, and (2) larger values of quark masses than have been used in previous evaluations of "penguin" matrix elements.Physicsarticle