Stability and leptogenesis in the left-right symmetric seesaw mechanism
2007 (English)In: Journal of High Energy Physics (JHEP), ISSN 1029-8479, E-ISSN 1126-6708, Vol. 4, 022-1-022-25 p.Article in journal (Refereed) Published
We analyze the left-right symmetric type I+II seesaw mechanism, where an eight-fold degeneracy among the mass matrices of heavy right-handed neutrinos M-R is known to exist. Using the stability property of the solutions and their ability to lead to successful baryogenesis via leptogenesis as additional criteria, we discriminate among these eight solutions and partially lift their eight-fold degeneracy. In particular, we find that viable leptogenesis is generically possible for four out of the eight solutions.
Place, publisher, year, edition, pages
2007. Vol. 4, 022-1-022-25 p.
baryogenesis, neutrino physics
IdentifiersURN: urn:nbn:se:kth:diva-7250DOI: 10.1088/1126-6708/2007/04/022ISI: 000246396400022OAI: oai:DiVA.org:kth-7250DiVA: diva2:12205
QC 201105182011-05-182007-05-312011-06-15Bibliographically approved