A Highly Predictive Ansatz for Leptonic Mixing and CP Violation
نویسنده
چکیده
We suggest a simple highly predictive ansatz for charged lepton and light neutrino mass matrices, based on the assumption of universality of Yukawa couplings. Using as input the charged lepton masses and light neutrino masses, the six parameters characterizing the leptonic mixing matrix VPMNS , are predicted in terms of a single phase φ, which takes a value around φ = π 2 . Correlations among variuos physical quantities are obtained, in particular V PMNS 13 is predicted as a function of ∆m221, ∆m 2 31 and sin 2(θsol), and restricted to the range 0.167 < |V PMNS 13 | < 0.179. PACS numbers : 12.10.Kt, 12.15.Ff, 14.60.Pq e-mail: [email protected] e-mail: [email protected]
منابع مشابه
CP violation in neutrino mixing matrix and leptogenesis
The CP violation required in leptogenesis may have different origin, but in an effective theory they all are related to the rephasing invariant CP violating measure in the mixing matrix of the leptonic sector. We point out that the maximum amount of CP violation in some models can be estimated with our present knowledge of the neutrino mixing angles, which can help us understand the CP violatio...
متن کاملNeutrino Masses and Leptonic CP Violation
Neutrino oscillations as solutions of the solar neutrino problems and the atmospheric neutrino deficits may restrict neutrino mass squared differences and mixing angles in three-neutrino mixing scheme. Currently we have several solutions depending on the interpretations of the solar neutrino problems. Combining the neutrino oscillation solutions and a mass matrix ansatz, we investigated the neu...
متن کاملNearly Tri-Bimaximal Neutrino Mixing and CP Violation
We point out two simple but instructive possibilities to modify the tri-bimaximal neutrino mixing ansatz, such that leptonic CP violation can naturally be incorporated into the resultant scenarios of nearly tri-bimaximal flavor mixing. The consequences of two new ansätze on solar, atmospheric and reactor neutrino oscillations are analyzed. We also discuss an interesting approach to construct le...
متن کاملLeptonic CP Violation Phases Using an Ansatz for the Neutrino Mass Matrix and Application to Leptogenesis
We further study the previously proposed Ansatz, Tr(Mν)=0, for a prediagonal light Majorana type neutrino mass matrix. If CP violation is neglected this enables one to use the existing data on squared mass differences to estimate (up to a discrete ambiguity) the neutrino masses themselves. If it is assumed that only the conventional CP phase is present, the Ansatz enables us to estimate this ph...
متن کاملDemocratic Neutrino Mixing Reexamined
We reexamine the democratic neutrino mixing ansatz, in which the mass matrices of charged leptons and Majorana neutrinos arise respectively from the explicit breaking of S(3)L×S(3)R and S(3) flavor symmetries. It is shown that a democracy term in the neutrino sector can naturally allow the ansatz to fit the solar neutrino mixing angle θsun ≈ 33. We predict sin 2θatm ≈ 0.95 for atmospheric neutr...
متن کامل