The Minimal Type-I Seesaw Model and Flavor-dependent Leptogenesis
| dc.creator | Xing, Zhi-zhong | |
| dc.creator | Zhou, Shun | |
| dc.date | 2007-12-17 | |
| dc.date.accessioned | 2026-07-07T11:54:42Z | |
| dc.date.available | 2026-07-07T11:54:42Z | |
| dc.description | In this talk, we first give a brief review of the so-called minimal seesaw models and then concentrate on the minimal type-I seesaw model with two almost degenerate right-handed Majorana neutrinos of ${\cal O}(1 {\rm TeV})$. A specific texture of the neutrino Yukawa coupling matrix is proposed to achieve the nearly tri-bimaximal neutrino mixing pattern. This ansatz predicts (1) $θ^{}_{23} = π/4$, $|δ| = π/2$ and $\sin^2 θ^{}_{12} = (1 - 2 \tan^2 θ^{}_{13})/3$ in the $m^{}_1 = 0$ case; and (2) $θ^{}_{23} =π/4$ and $θ^{}_{13} = δ= 0$ in the $m^{}_3 = 0$ case. In both cases, the cosmological baryon number asymmetry can be explained via the resonant leptogenesis mechanism. Finally, we demonstrate the significance of flavor-dependent effects in our leptogenesis scenario. | |
| dc.description | 4 pages. Talk given by Shun Zhou at the 4th International Conference on Flavor Physics, 24-28 September 2007, Beijing (to appear in the proceedings) | |
| dc.identifier | https://arxiv.org/abs/0712.2609 | |
| dc.identifier | http://arxiv.org/abs/0712.2609 | |
| dc.identifier | Int.J.Mod.Phys.A23:3403-3407,2008 | |
| dc.identifier | doi:10.1142/S0217751X08042201 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/204995 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | The Minimal Type-I Seesaw Model and Flavor-dependent Leptogenesis | |
| dc.type | text |