Small Dirac neutrino masses in supersymmetric grand unified theories

2002/04/30 by Ryuichiro Kitano · 1 citation
Physics and Astronomy · #Black Holes and Theoretical Physics #Dirac (video compression format) #Grand Unified Theory #Neutrino #Neutrino Physics Research #Neutrino oscillation #Particle physics #Particle physics theoretical and experimental studies #Physics #Sterile neutrino #Supersymmetry #hep-ph

paper · pdf · doi:10.1016/s0370-2693(02)02067-1

published as Phys.Lett.B539:102-106,2002 · 11 pages, 2 figures, references added, version to appear in Phys. Lett B

arxiv created 2002/06/11 · openalex publication_date 2002/07/01 · arxiv updated 2014/11/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

A simple mechanism to generate Dirac masses for the neutrinos in SU(5) supersymmetric grand unified theory is proposed. The tiny Dirac masses are induced by the small mixing between the Higgs fields and another superheavy fields. The mixing terms are obtained by the same mechanism as the mu-term generation of the order of the supersymmetry breaking scale, so that the mixing of order TeV / M_GUT ∼ 10^-13 is realized. We consider the lepton flavor violating processes in this model. The branching ratios are directly related to the neutrino oscillation parameters and we can predict the B(τ-> μγ) / B(μ-> e γ) ratio once the neutrino oscillation parameters are determined.

Citations

• Pseudo-Dirac neutrinos as a potential complete solution to the neutrino oscillation puzzle
• Violations of lepton flavour and CP in supersymmetric unified theories
• Signals for supersymmetric unification
• Remarks on the Unified Model of Elementary Particles
• New tools for low energy dynamical supersymmetry breaking
• Exact event rates of lepton flavor violating processes in supersymmetric SU(5) model [Phys. Lett. B 391 (1997) 341]

Cited by

• Flavor symmetry L μ-L τ and quasidegenerate neutrinos