Supersymmetric Grand Unified Theories and Global Fits to Low Energy Data

Abstract

We present a self-consistent ${\chi }^2$ analysis of several supersymmetric (SUSY) grand unified theories recently discussed in the literature. We obtain global fits to low energy data, including gauge couplings, fermion masses and mixing angles, gauge boson masses and $BR(b\to s\gamma )$. One of the models studied provides an excellent fit to the low energy data with ${\chi }^2\sim 1$ for 3 degrees of freedom, in a large region of the experimentally allowed SUSY parameter space. We also discuss the consequences of our work for a general MSSM analysis at the $Z$ scale.

6 pages, Latex, 2 figures included

References in corpus (4)

• A Systematic SO(10) Operator Analysis for Fermion Masses
• Finite Supersymmetric Threshold Corrections to CKM Matrix Elements in the Large $tan\beta$ Regime
• ${\sin }^2{\theta }_W(M_Z)$ ~in the MSSM and Unification of Couplings
• GUT Scale Threshold Corrections in a Complete Supersymmetric SO(10) Model: ${\alpha }_s(M_Z)$ vs. Proton Lifetime

Cited by in corpus (17)

• Relic Density of Neutralino Dark Matter in Supergravity Models
• Dark matter allowed scenarios for Yukawa-unified SO(10) SUSY GUTs
• Haggling over the fine-tuning price
• Yukawa Coupling Unification in Supersymmetric Models
• Cosmological consequences of Yukawa-unified SUSY with mixed axion/axino cold and warm dark matter
• Is "just-so" Higgs splitting needed for t-b-τYukawa unified SUSY GUTs?
• SO(10) SUSY GUTs, the gravitino problem, non-thermal leptogenesis and axino dark matter
• $b\to s\gamma$ with Large tan$\beta$ in MSSM Analysis Constrained by a Realistic SO(10) Model
• Testing Yukawa-unified SUSY during year 1 of LHC: the role of multiple b-jets, dileptons and missing E_T
• A heavier gluino from t-b-tau Yukawa-unified SUSY
• Sparticle mass spectra from SU(5) SUSY GUT models with $b-\tau$ Yukawa coupling unification
• Reconciling Neutralino Relic Density with Yukawa Unified Supersymmetric Models
• Prospects for Yukawa Unified SO(10) SUSY GUTs at the CERN LHC
• Yukawa-unified natural supersymmetry
• An Alternative Yukawa Unified SUSY Scenario
• Beyond the Higgs boson at the Tevatron: detecting gluinos from Yukawa-unified SUSY
• Masses of Third Family Vector-like Quarks and Leptons in Yukawa-Unified $E_6$