Towards a grand unified picture for neutrino and quark mixings

TL;DR

This paper explores a grand unified framework linking neutrino and quark mixings, proposing that fermion mass matrices with Fritzsch-like structures can explain observed mixing patterns within SU(5) unification.

Contribution

It introduces a model connecting quark and lepton mixings through Fritzsch-like mass matrices in SU(5) grand unification, emphasizing an underlying complementarity.

Findings

Quark and lepton mixing angles exhibit a complementary pattern.

Fritzsch-like mass matrices can naturally explain the mixing data.

The model supports a unified understanding of fermion masses and mixings.

Abstract

The comparison of the CKM mixing angles with the leptonic mixings implied by the recent atmospheric and solar neutrino data exhibits an interesting complementarity. This pattern can be understood in the context of the SU(5) grand unification, assuming that the fermion mass matrices have Fritzsch-like structures but are not necessarily symmetric. (The present contribution is based on the paper in ref. \cite{az}.)