CP Conservation in the Presence of Pseudoparticles

Xavi Ponce, de Padova University, will present the paper CP Conservation in the Presence of Pseudoparticles R. D. Peccei and Helen R. Quinn Phys. Rev. Lett. 38, 1440.

Abstract: We give an explanation of the CP conservation of strong interactions which includes the effects of pseudoparticles. We find it is a natural result for any theory where at least one flavor of fermion acquires its mass through a Yukawa coupling to a scalar field which has nonvanishing vacuum expectation value.