Texture specific mass matrices with Dirac neutrinos and their implications

TL;DR

This paper investigates texture-specific mass matrices for Dirac neutrinos, analyzing their implications for different mass hierarchies, and rules out certain scenarios based on current experimental data.

Contribution

It provides detailed predictions for texture 6 zero and 5 zero mass matrices in Dirac neutrino models across various mass hierarchies, with some scenarios ruled out by data.

Findings

Inverted hierarchy and degenerate scenarios are incompatible with current data.

Normal hierarchy predicts a lower limit for m_nu_1 and s_13.

Implications for CP violation phase delta_l are discussed.

Abstract

Considering Dirac neutrinos and Fritzsch-like texture 6 zero and 5 zero mass matrices, detailed predictions for cases pertaining to normal/inverted hierarchy as well as degenerate scenario of neutrino masses have been carried out. All the cases considered here pertaining to inverted hierarchy and degenerate scenario of neutrino masses are ruled out by the existing data. For the normal hierarchy cases, the lower limit of m_nu_1 and of s_13 as well as the range of Dirac-like CP violating phase delta_l would have implications for the texture specific cases considered here.