Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-09-15
Physics
High Energy Physics
High Energy Physics - Phenomenology
Submitted to the proceedings of "The 2009 Europhysics Conference on High Energy Physics", July 16 - 22, 2009, Krakow, Poland
Scientific paper
The CP-violation necessary for the generation of the baryon asymmetry of the Universe in the "flavoured" leptogenesis scenario can arise from the "low energy" PMNS neutrino mixing matrix and/or from the "high energy" part of neutrino Yukawa couplings, which can mediate CP-violating phenomena only at some high energy scale. The possible interplay between these two types of CP-violation is discussed. The type I see-saw model with three heavy right-handed Majorana neutrinos having hierarchical spectrum is considered. The analysis shows that there exist regions in the leptogenesis parameter space where the relevant "high energy" phases have large CP-violating values, but the purely "high energy" contribution to the baryon asymmetry plays a subdominant/suppressed role in the production of baryon asymmetry compatible with the observations and one can have successful leptogenesis if the requisite CP-violation is provided by the Majorana phase(s) in the neutrino mixing matrix.
Molinaro Emiliano
Petcov Serguey T.
No associations
LandOfFree
On the Interplay Between the 'Low' and 'High' Energy CP-Violation in Leptogenesis does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with On the Interplay Between the 'Low' and 'High' Energy CP-Violation in Leptogenesis, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the Interplay Between the 'Low' and 'High' Energy CP-Violation in Leptogenesis will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-556249