Re-Examination of Generation of Baryon and Lepton Number Asymmetries by Heavy Particle Decay

Abstract

It is shown that wave function renormalization can introduce an important contribution to the generation of baryon and lepton number asymmetries by heavy particle decay. These terms, omitted in previous analyses, are of the same order of magnitude as the standard terms. A complete cancellation of leading terms can result in some interesting cases.

Comments: 12 pages, 2 Feynman graphs (not included), UPR-0559