SO(10) GUT and Quark-Lepton Mass Matrices

TL;DR

This paper explores a zero-texture mass matrix model within SO(10) GUTs, successfully fitting quark and lepton mixing data and neutrino masses with a constrained parameter set.

Contribution

It demonstrates that a specific zero-texture mass matrix model can be compatible with experimental quark and lepton data within SO(10) GUT framework, with minimal free parameters.

Findings

Consistent fit to quark mixing matrix (CKM)

Successful modeling of neutrino oscillation data

Minimal parameter adjustment achieves comprehensive data fit

Abstract

The phenomenological model that all quark and lepton mass matrices have the same zero texture, namely their (1,1), (1,3) and (3,1) components are zeros, is discussed in the context of SO(10) Grand Unified Theories (GUTs). The mass matrices of type I for quarks are consistent with the experimental data in the quark sector. For the lepton sector, consistent fitting to the data of neutrino oscillation experiments force us to use the mass matrix for the charged leptons which is slightly deviated from type I. Given quark masses and charged lepton masses, the model includes 19 free parameters, whereas the SO(10) GUTs gives 16 constrained equations. Changing the remaining three parameters freely, we can fit all the entries of the CKM quark mixing matrix and the MNS lepton mixing matrix, and three neutrino masses consistently with the present experimental data.