Yukawaon Model in the Quark Sector and Nearly Tribimaximal Neutrino Mixing

TL;DR

This paper proposes a yukawaon model that successfully explains the nearly tribimaximal neutrino mixing and quark mass ratios using only two parameters, providing a unified approach to fermion mass and mixing patterns.

Contribution

It introduces a yukawaon model in the quark sector that accurately reproduces neutrino mixing angles and quark mass ratios with minimal parameters.

Findings

Excellent fit to two up-quark mass ratios.

Accurate reproduction of three neutrino mixing parameters.

Model uses only two parameters for all observables.

Abstract

For the purpose of deriving the observed nearly tribimaximal neutrino mixing, a possible yukawaon model in the quark sector is investigated. Five observable quantities (2 up-quark mass ratios and 3 neutrino mixing parameters \sin^2 2\theta_{atm}, \tan^2\theta_{solar} and |U_{13}|) are excellently fitted by two parameters (one in the up-quark sector and another one in the right-handed Majorana neutrino sector).