Massive neutrinos in a grounds-up approach with quark-lepton similarity
| dc.creator | Bar-Shalom, Shaouly | |
| dc.creator | Atwood, David | |
| dc.creator | Soni, Amarjit | |
| dc.date | 2005-11-23 | |
| dc.date | 2006-11-12 | |
| dc.date.accessioned | 2026-07-07T06:50:07Z | |
| dc.date.available | 2026-07-07T06:50:07Z | |
| dc.description | We examine neutrino oscillations in a two Higgs doublet model (2HDM) in which the second doublet couples only to the third generation right-handed up-fermions, i.e., to t_R and to N_3 which is the heaviest right-handed Majorana neutrino. The inherently large tan(beta) of this model can naturally account for the large top mass and, based on a quark-lepton similarity ansatz, when embedded into a seesaw mechanism it can also account for the observed neutrino masses and mixing angles giving a very small theta_13: -0.017 < theta_13 < 0.021 at 99% CL, and a very restrictive prediction for the atmospheric mixing angle: 42.9(deg) < theta_atm < 45.2(deg) at 99% CL. The large value of tan(beta) also sets the mass scale of the heaviest right-handed Majorana neutrino N_3 and triggers successful leptogenesis through a CP-asymmetry in the decays of the N_1 (lightest right-handed Majorana) which is tan^2(beta) enhanced compared to the CP-asymmetry obtained in models for leptogenesis with one Higgs doublet or in the MSSM. This enhancement allows us to relax the lower bound on M_{N_1} and consequently also the lower bound on the reheating temperature of the early universe. | |
| dc.description | 4 pages, talk given at the International Europhysics Conference on High Energy Physics, July 21st - 27th 2005, Lisboa, Portugal and at the 14th International Conference on Supersymmetry and the Unification of Fundamental Interactions, June 12th-17th 2006, Irvine, California, USA | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0511282 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0511282 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/104588 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Massive neutrinos in a grounds-up approach with quark-lepton similarity | |
| dc.type | text |