Neutrinos and Gauge Unification

Abstract

The approximate unification of gauge couplings is the best indirect evidence for low-energy supersymmetry, although it is not perfect in its simplest realizations. Given the experimental evidence for small non-zero neutrino masses, it is plausible to extend the MSSM with three right-handed neutrino chiral multiplets, with large Majorana masses below the unification scale, so that a see-saw mechanism can be implemented. In this extended MSSM, the unification prediction for the strong gauge coupling constant at M_Z can be lowered by up to \sim 5%, bringing it closer to the experimental value at 1σ, therefore improving significantly the accuracy of gauge coupling unification.

5 pages, LaTeX, 1 figure

References in corpus (7)

• Evidence for oscillation of atmospheric neutrinos
• Measurement of the flux and zenith-angle distribution of upward through-going muons by Super-Kamiokande
• Measurement of a small atmospheric ${\nu }_{\mu }/{\nu }_e$ ratio
• Study of the atmospheric neutrino flux in the multi-GeV energy range
• Constraints on neutrino oscillation parameters from the measurement of day-night solar neutrino fluxes at Super-Kamiokande
• Measurement of the solar neutrino energy spectrum using neutrino-electron scattering
• 2-Loop Supersymmetric Renormalisation Group Equations Including R-Parity Violation and Aspects of Unification

Cited by in corpus (12)

• SUSEFLAV: program for supersymmetric mass spectra with seesaw mechanism and rare lepton flavor violating decays
• What if Supersymmetry Breaking Unifies beyond the GUT Scale?
• The Seesaw with Many Right-Handed Neutrinos
• Neutrino sector impacts SUSY dark matter
• Heavy Right-Handed Neutrinos and Dark Matter in the $\nu$CMSSM
• Constraints on the rare tau decays from mu --> e gamma in the supersymmetric see-saw model
• SUSY dark matter and lepton flavor violation
• A Sneutrino NLSP in the $\nu$CMSSM
• Neutrino-induced Electroweak Symmetry Breaking in Supersymmetric SO(10) Unification
• Enhanced Tau Lepton Signatures at LHC in Constrained Supersymmetric Seesaw
• One-Loop Right-Handed Neutrino Threshold Corrections for Two-Loop Running in Supersymmetric Type I Seesaw Models
• The Minimal Supersymmetric Standard Model with Non-Invertible Selection Rules