Cosmological Baryon Asymmetry and Kaon CP Violation from a Common Source

Abstract

We extend an earlier model for radiatively generated fermion masses based on the Pati-Salam group to include CP violation. Spontaneous CP violation in the early universe gives rise to a complex mass matrix for heavy sterile neutrinos. The out-of-equilibrium decay of these neutrinos generates a $B-L$ asymmetry. The sterile neutrinos also act as a mass seed in generating one-loop (complex) mass matrices for the quarks. Thus, the two low energy manifestations of CP violation -- the CKM phase and the baryon number asymmetry -- can both be traced in a calculable way to a common source.

26 pages, Latex. 6 figures submitted as uuencoded file, uses epsfig.sty

References in corpus (4)

• Yukawa Textures and Anomalies
• Solar and atmospheric neutrino oscillations with three flavours
• Prospects for mass unification at low energy scales
• Radiatively Generated Fermion Masses In $SU(4)\times SU(2{)}_L\times SU(2{)}_R$

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• Baryon Asymmetry and Neutrino Mixing
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• Leptogenesis in Theories with Large Extra Dimensions
• Leptonic CP violation phases using an ansatz for the neutrino mass matrix and application to leptogenesis
• CKM Matrix and Standard-Model CP Violation