Flavor Symmetries, Neutrino Masses and Neutrino Mixing

TL;DR

This paper explores neutrino mixing and masses using texture zero mass matrices, revealing hierarchical masses, specific mixing angles, and small CP violation, with implications for understanding lepton flavor physics.

Contribution

It applies texture zero mass matrices to neutrinos, establishing links between mixing angles and mass ratios, and highlights differences from quark sector patterns.

Findings

Solar mixing angle linked to first two neutrino mass ratio

Neutrino masses are hierarchical with small ratios

Atmospheric mixing angle approximately 38 degrees

Abstract

We discuss the neutrino mixing, using the texture 0 mass matrices, which work very well for the quarks. The solar mixing angle is directly linked to the mass ratio of the first two neutrinos. The neutrino masses are hierarchical, but the mass ratios turn out to be much smaller than for quarks. The atmospheric mixing angle is 38$^{\circ}$. The CP violation for leptons should be much smaller than for quarks.