Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2004-10-27
Phys.Rev. D71 (2005) 033001
Physics
High Energy Physics
High Energy Physics - Phenomenology
5 pages; latex; no figures; some typos corrected
Scientific paper
10.1103/PhysRevD.71.033001
If an exact $\mu\leftrightarrow \tau$ symmetry is the explanation of the maximal atmospheric neutrino mixing angle, it has interesting implications for origin of matter via leptogenesis in models where small neutrino masses arise via the seesaw mechanism. For seesaw models with two right handed neutrinos $(N_\mu, N_\tau)$, lepton asymmetry vanishes in the exact $\mu\leftrightarrow \tau$ symmetric limit, even though there are nonvanishing Majorana phases in the neutrino mixing matrix. On the other hand, for three right handed neutrino models, lepton asymmetry nonzero and is given directly by the solar mass difference square. We also find an upper bound on the lightest neutrino mass.
Mohapatra Rabindra N.
Nasri Salah
No associations
LandOfFree
Leptogenesis and $μ-τ$ symmetry 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 Leptogenesis and $μ-τ$ symmetry, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Leptogenesis and $μ-τ$ symmetry will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-342527