Deviation from tri-bimaximal mixings in two types of inverted hierarchical neutrino mass models
| dc.creator | Singh, N. Nimai | |
| dc.creator | Rajkhowa, Monisa | |
| dc.creator | Borah, Abhijit | |
| dc.date | 2006-03-23 | |
| dc.date.accessioned | 2026-07-07T11:58:44Z | |
| dc.date.available | 2026-07-07T11:58:44Z | |
| dc.description | An attempt is made to explore the possibility for deviations of solar mixing angle ($θ_{12}$) from tri-bimaximal mixings, without sacrificing the predictions of maximal atmospheric mixing angle ($θ_{23}=π/4$) and zero reactor angle ($θ_{13}=0$). We find that the above conjecture can be automatically realised in the inverted hierarchical neutrino mass model having 2-3 symmetry, in the basis where charged lepton mass matrix is diagonal. For the observed ranges of $\bigtriangleup m^2_{21}$ and $\bigtriangleup m^2_{23]$, we calculate the predictions on $\tan^2θ_{12}=0.5, 0.45, 0.35$ for different input values of the parameters in the neutrino mass matrix. We also observe a possible crossing over from one type of inverted hierarchical model having same CP parity (Type-IHA) to other type having opposite CP parity (Type-IHB). Such neutrino mass matrices can be obtained from the canonical seesaw formula using diagonal form of Dirac neutrino mass matrix and non-diagonal texture of right-handed Majorana mass matrix, and may have important implications in model building using discrete as well as non-abelian symmetry groups. | |
| dc.description | 13 pages, 7 figures | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0603189 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0603189 | |
| dc.identifier | Pramana69:533-550,2007 | |
| dc.identifier | doi:10.1007/s12043-007-0154-x | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/206323 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Deviation from tri-bimaximal mixings in two types of inverted hierarchical neutrino mass models | |
| dc.type | text |