After the Electroweak (EW) symmetry breaking, the light Majorana neutrino
masses are generated after the so-called type I Seesaw mechanism.
Valle, "Constraining Majorana neutrino
electromagnetic properties from the LMA-MSW solution of the solar neutrino problem," Nuclear Physics B, vol.
Furthermore it is not yet clear that neutrino (oscillation) phenomena correspond to Dirac or Majorana neutrino
Okada, "Supersymmetric minimal B-L model at the TeV scale with right-handed Majorana neutrino
dark matter," Physical Review D: Particles, Fields, Gravitation and Cosmology, vol.
The rest of the work is planned as follows: In Section 2, we discuss the methodology used to reconstruct the Majorana neutrino
mass matrix and subsequently obtain some useful phenomenological relations of neutrino mass ratios and Majorana phases by incorporating texture one-zero and zero trace conditions simultaneously.
Lack of RH] in these representations gives vanishing Dirac neutrino mass and vanishing Majorana neutrino
mass at renormalizable level.
Rosen, "Double-beta decay and a massive Majorana neutrino
," Physical Review D: Particles, Fields, Gravitation and Cosmology, vol.
In the present paper, we propose the novel possibilities of hybrid textures where we assume one texture zero and an equality between the cofactors (referred as type X) or one zero minor and an equality between the elements (referred as type Y) in the Majorana neutrino
mass matrix [M.sub.[nu]].
The effective Majorana neutrino
mass matrix ([M.sub.v]) contains nine parameters which include three neutrino masses ([m.sub.1], [m.sub.2], [m.sub.3]), three mixing angles ([[theta].sub.12], [[theta].sub.23], [[theta].sub.13]), and three CP violating phases ([delta], [rho], [alpha]).
Furthermore, this anomaly has triggered the intense theoretical interest and towards its explanation several models have been proposed [54, 55] including also those addressing heavy Dirac or Majorana neutrino
decay [56, 57], the existence of sterile neutrinos , and others.
A special feature of left-right gauge theories [49-52] and SO(10) grand unified theory (GUT) [53-60] is that the canonical seesaw formula [12-17] for Majorana neutrino
masses is invariably accompanied by the type II seesaw formula [18-22]
The corresponding effective Majorana neutrino
sensitivity is expected to fall in the range 55133 meV.