Grand Unification of Flavor Mixings

TL;DR

This paper proposes that quark and lepton flavor mixings can be unified at high energy scales under neutrino degeneracy, with quantum corrections explaining their differences at low energies.

Contribution

It introduces a framework where flavor mixings unify at high energy, providing a possible origin for their observed differences through quantum effects.

Findings

Flavor mixing angles can unify at high energy with neutrino degeneracy.

Quantum corrections can generate diverse low-energy flavor mixings.

Unified flavor structure offers insights into quark-lepton differences.

Abstract

An origin of flavor mixings in quark and lepton sectors is still a mystery, and a structure of the flavor mixings in lepton sector seems completely different from that of quark sector. In this letter, we point out that the flavor mixing angles in quark and lepton sectors could be unified at a high energy scale, when neutrinos are degenerate. It means that a minimal flavor violation at a high energy scale can induce a rich variety of flavor mixings in quark and lepton sectors at a low energy scale through quantum corrections.