Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2008-08-14
Nucl.Phys.B809:183-217,2009
Physics
High Energy Physics
High Energy Physics - Phenomenology
32 pages, 23 figures. v2: 2 comments [below Eq. (53) and at the end of the conclusions] and 1 reference added, typos corrected
Scientific paper
10.1016/j.nuclphysb.2008.09.043
We study thermal leptogenesis in a broad class of supersymmetric SO(10) models with a left-right symmetric seesaw mechanism, taking into account flavour effects and the contribution of the next-to-lightest right-handed neutrino supermultiplet. Assuming M_D = M_u and a normal hierarchy of light neutrino masses, we show that four out of the eight right-handed neutrino mass spectra reconstructed from low-energy neutrino data can lead to successful leptogenesis with a reheating temperature in the (10^9 - 10^10) GeV range. In the remaining four solutions, leptogenesis is dominated by N_2 decays, as in the type I seesaw case. We find that some of these spectra can generate the observed baryon asymmetry for reheating temperatures above 10^10 GeV, in contrast to the type I case. Together with flavour effects, an accurate description of charged fermion masses turns out to be a crucial ingredient in the analysis.
Abada Asmaa
Hosteins Pierre
Josse-Michaux François-Xavier
Lavignac Stephane
No associations
LandOfFree
Successful Leptogenesis in SO(10) Unification with a Left-Right Symmetric Seesaw Mechanism 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 Successful Leptogenesis in SO(10) Unification with a Left-Right Symmetric Seesaw Mechanism, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Successful Leptogenesis in SO(10) Unification with a Left-Right Symmetric Seesaw Mechanism will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-650224