Viable textures for the fermion sector

TL;DR

This paper explores modified fermion mass textures, demonstrating their compatibility with quark and lepton data, and proposes new textures that explain mixing patterns with minimal assumptions.

Contribution

It introduces a modified fermion texture fitting quark data well and proposes new textures for quarks and leptons that explain mixing patterns.

Findings

Modified texture fits quark data accurately

New textures produce viable lepton masses and mixing

Minimal assumptions in flavor structure

Abstract

We consider a modification of the Fukuyama-Nishiura texture and compare it to the precision quark flavour data, finding that it fits the data very well but at the cost of accidental cancelations between parameters. We then propose different viable textures for quarks, where only the Cabibbo mixing arises from the down sector, and extend to the charged leptons while constructing a complementary neutrino structure that leads to viable lepton masses and mixing.