Neutrino Mass Matrix Related to Up-Quark Masses and Nearly Tribimaximal Mixing -- Based on a Yukawaon model --

TL;DR

This paper proposes a neutrino mass matrix model derived from up-quark masses and CKM parameters, achieving nearly tribimaximal mixing without discrete symmetry assumptions.

Contribution

It introduces a Yukawaon-based approach linking neutrino masses to quark sector parameters, offering a novel explanation for neutrino mixing patterns.

Findings

Neutrino mass matrix expressed via up-quark masses and CKM parameters

Achieves nearly tribimaximal mixing without discrete symmetry

Supports Yukawaon model as a viable framework for flavor physics

Abstract

Based on a new approach (the so-called Yukawaon model) to the mass spectra and mixings, a neutrino mass matrix which is described in terms of the up-quark masses and CKM matrix parameters is proposed. The mass matrix successfully leads to a nearly tribimaximal mixing without assuming any discrete symmetry.