Neutrino oscillations and PMNS matrix in gauge-Higgs unification

TL;DR

This paper explores neutrino oscillations and the PMNS matrix within a gauge-Higgs unification framework in warped space, explaining tiny neutrino masses via an inverse seesaw and aligning with experimental data.

Contribution

It presents a novel model of neutrino oscillations in gauge-Higgs unification, deriving the PMNS matrix and neutrino masses consistent with experimental observations.

Findings

PMNS matrix with normal ordering and δ_CP=π naturally emerges

Tiny neutrino masses generated via inverse seesaw mechanism

Model aligns with NuFit-6.0 neutrino oscillation data

Abstract

In the $SO(5) \times U(1) \times SU(3)$ gauge-Higgs unification in the Randall-Sundrum (RS) warped space neutrino oscillations and the Pontecorvo-Maki-Nakagawa-Sakata (PMNS) matrix in the $W$ couplings originate from Majorana mass terms on the ultraviolet brane in the RS space. Tiny neutrino masses are generated by an inverse seesaw mechanism. The PMNS matrix in the normal ordering with $\delta_{CP}=\pi$ naturally arises consistently with the NuFit-6.0 analysis of neutrino oscillation data.