Discriminating neutrino mass models using Type II seesaw formula
  In this paper we propose a kind of natural selection which can discriminate the three possible neutrino mass models, namely the degenerate, inverted hierarchical and normal hierarchical models, using the framework of Type II seesaw formula. We arrive at a conclusion that the inverted hierarchical model appears to be most favourable whereas the normal hierarchical model follows next to it. The degenerate model is found to be most unfavourable. We use the hypothesis that those neutrino mass models in which Type I seesaw term dominates over the Type II left-handed Higgs triplet term are favoured to survive in nature. 
N. Nimai Singh (1,2), Mahadev Patgiri (3) and Mrinal Kumar Das (2)   ((1) The Abdus Salam ICTP, Trieste, Italy, (2) Gauhati ...