Different Mixing Scenerio of Quasi-Degenerate Neutrino with Charged Lepton Correction

Mrinal Kumar Das

doi:10.4236/jmp.2012.310192

Abstract

Theoretically, in order to achieve non-zero θ13 a little deviation from Tribimaximal Mixing (TBM) pattern is needed, especially on θ13 without perturbing the atmospheric and solar mixing angles. In this work we computed the neutrino mixing angles by disturbing the θ13 as well as θ12 in Bimaximal (BM) and Hexagonal mixing (HM) using non-diagonal charged lepton mass. Considering the standard form of mass texture which satisfies TBM we have shown the quasi-degenerate nature of neutrino. This quasi degenerate type of mass matrix for BM and HM is then used to calculate the deviated mixing pattern which are consistent with recent neutrino oscillation data.

Highlights

Recent solar, atmospheric, reactor, and accelerator neutrino experiments have provided concrete evidence that neutrinos are massive and they change their flavors during propagation
Considering the standard form of mass texture which satisfies Tribimaximal Mixing (TBM) we have shown the quasidegenerate nature of neutrino
This quasi degenerate type of mass matrix for BM and Hexagonal mixing (HM) is used to calculate the deviated mixing pattern which are consistent with recent neutrino oscillation data

Summary

Introduction

Atmospheric, reactor, and accelerator neutrino experiments have provided concrete evidence that neutrinos are massive and they change their flavors during propagation. In the proposed work we give a description of neutrino mixing which is achieved in the framework of bimaximal, tribimaximal and hexagonal mixing with the help of charged lepton correction. The seesaw mechanism is used to construct neutrino mass models e.g.: Quasi-degenerate, Normal Hierarchical (NH) and Inverted Hierarchical (IH), are discussed in our earlier work [14,15] Out of these three models which model can give good prediction to the neutrino oscillation is a topical question in recent neutrino physics. With the help of charged lepton correction how these mixing can predict new mixing which are consistent with recent experimental data along with non-zero 13 is discussed. In the final section i.e. in Section 4, there are some concluding remarks

Quasi-Degenerate Neutrino

Deviation from Original Mixing Pattern with Charged Lepton Correction

Bimaximal Mixing

Conclusion