Correcting α_3(M_Z) in the NMSGUT

Abstract

We show that superheavy threshold corrections in the New Minimal Supersymmetric GUT based on the SO(10) Higgs system $210\oplus 126\oplus \overline{126}\oplus 10\oplus 120$ can comfortably correct the prediction for the value of ${\alpha }_3(M_Z)$ from the relatively large value predicted by the two loop RG equations to the central value determined by the current world average. The unification scale is raised above the one loop value over almost all of the viable parameter space.

9 pages, latex, 3 figures

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• Fermion Masses in SO(10) Models
• Fits to SO(10) Grand Unified Models
• The New Minimal Supersymmetric GUT : Spectra, RG analysis and Fermion Fits
• Constraining Proton Lifetime in SO(10) with Stabilized Doublet-Triplet Splitting
• Baryon Stability on the Higgs Dissolution Edge : Threshold corrections and suppression of Baryon violation in the NMSGUT
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• Confronting SUSY SO(10) with updated Lattice and Neutrino Data
• Proton decay in a supersymmetric SO(10) model with missing partner mechanism
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