Normal and Special Models of Neutrino Masses and Mixings
| dc.creator | Altarelli, Guido | |
| dc.date | 2005-08-04 | |
| dc.date.accessioned | 2026-07-07T03:55:21Z | |
| dc.date.available | 2026-07-07T03:55:21Z | |
| dc.description | One can make a distinction between "normal" and "special" models. For normal models $θ_{23}$ is not too close to maximal and $θ_{13}$ is not too small, typically a small power of the self-suggesting order parameter $\sqrt{r}$, with $r=Δm_{sol}^2/Δm_{atm}^2 \sim 1/35$. Special models are those where some symmetry or dynamical feature assures in a natural way the near vanishing of $θ_{13}$ and/or of $θ_{23}- π/4$. Normal models are conceptually more economical and much simpler to construct. Here we focus on special models, in particular a recent one based on A4 discrete symmetry and extra dimensions that leads in a natural way to a Harrison-Perkins-Scott mixing matrix. | |
| dc.description | To be published in the Proceedings of Rencontres de Physique de la Vallée d'Aoste, La Thuile, Italy | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0508053 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0508053 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/44526 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Normal and Special Models of Neutrino Masses and Mixings | |
| dc.type | text |