Leptogenesis, neutrinoless double beta decay and terrestrial CP violation

Abstract

Leptogenesis in left-right symmetric theories is studied. The usual see-saw mechanism is modified by the presence of a left-handed Higgs triplet. A simple connection between the properties of the light left-handed and heavy right-handed neutrinos is found. Predictions of this scenario for neutrinoless double beta decay and terrestrial CP violation in long-baseline experiments are given. These observables can in principle distinguish different realizations of the model.

10 pages, 3 figures. Presented at XXV International School of Theoretical Physics, Ustron, Poland, 10-16 September 2001