Masses, mixing angles and phases of general Majorana neutrino mass matrix

作者：Adhikary Biswajit^*; Chakraborty Mainak; Ghosal Ambar

来源：The Journal of High Energy Physics, 2013, 2013(10): 043.

DOI：10.1007/JHEP10(2013)043

• Neutrino Physics
• Beyond Standard Model
• Discrete and Finite Symmetries

General Majorana neutrino mass matrix is complex symmetric and for three generations of neutrinos it contains 12 real parameters. We diagonalize this general neutrino mass matrix and express the three neutrino masses, three mixing angles, one Dirac CP phase and two Majorana phases (removing three unphysical phases) in terms of the neutrino mass matrix elements. We apply the results in the context of a neutrino mass matrix derived from a broken cyclic symmetry invoking type-I seesaw mechanism. Phenomenological study of the above mass matrix allows enough parameter space to satisfy the neutrino oscillation data with only 10% breaking of this symmetry. In this model only normal mass hierarchy is allowed. In addition, the Dirac CP phase and the Majorana phases are numerically estimated. Sigma m(i) and vertical bar m(nu ee)vertical bar are also calculated.

• 出版日期2013-10-8