2003/04/30 by Will Loinaz, Naotoshi Okamura, Saifuddin Rayyan +3 · 1 citation
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Neutrino Physics Research #Particle physics theoretical and experimental studies #hep-ph
paper · pdf · doi:10.1103/physrevd.68.073001
published as Phys.Rev. D68 (2003) 073001 · REVTeX4, 24 pages, 2 eps figures, expanded conclusions section and added references
arxiv created 2003/06/25 · openalex publication_date 2003/10/15 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
In a recent paper we pointed out that the mixing of the light neutrinos with heavy gauge singlet states could reconcile the Z-pole data from e+e^\ensuremath- colliders and the \ensuremathν_\ensuremathμ(\ensuremathν_\ensuremathμ) scattering data from the NuTeV experiment at Fermilab. We further noted that the mixing angle required to fit the data is much larger than what would be expected from the conventional seesaw mechanism. In this paper, we show how such mixings can be arranged by a judicious choice of the neutrino mass texture. We also argue that by invoking the unification of the Dirac mass matrix for the up-type quarks and the neutrinos, the mass of the heavy states can naturally be expected to lie in the few TeV range. The model is strongly constrained by the lepton flavor changing process \stackrel\ensuremath→\ensuremathμe\ensuremathγ which requires lepton universality to be violated in the charged channel.