Neutrino Mixing via the Neutrino Portal

2019/05/02 by Smirnov, Alexei Y
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Neutrino Physics Research #Particle physics theoretical and experimental studies

paper · pdf · doi:10.48550/arxiv.1905.00838

openalex publication_date 2019/05/02 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Relation between the lepton and quark mixings: U_PMNS ≈ V_CKM^† U_X, where U_X is the BM or TBM mixing matrices, implies the quark-lepton (Grand) unification and existence of hidden sector with certain flavor symmetries. The latter couples to the visible sector via the neutrino portal and is responsible for U_X, as well as for smallness of neutrino mass. GUT ensures appearance of ∼ V_CKM in the lepton mixing. General features of this scenario (inverse or double seesaw, screening of the Dirac structures, basis fixing symmetry) are described and two realizations are presented. The high energy realization is based on SO(10) GUT with the hidden sector at the Planck scale. The low energy realization includes the 100 TeV scale L-R symmetry and the hidden sector at the keV - MeV scale.

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