A kind of prediction from superstring model building

2001/10/31 by C. Munoz, Carlos Muñoz
Mathematics · Physics and Astronomy · #Approx #Black Holes and Theoretical Physics #Computer science #Cosmology and Gravitation Theories #Geometry #Grand Unified Theory #Heterotic string theory #Mathematics #Particle physics #Particle physics theoretical and experimental studies #Physics #Product (mathematics) #Quantum mechanics #Scale (ratio) #String (physics) #Superstring theory #Supersymmetry #Theoretical physics #Unification #hep-ph #hep-th

paper · pdf · doi:10.1088/1126-6708/2001/12/015

published as JHEP 0112:015,2001 · Phenomenological discussion expanded, references added, Latex, 25 pages, 3 figures

arxiv created 2001/11/26 · openalex publication_date 2001/12/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Assuming that the Standard Model of particle physics arises from the E₈× E₈ Heterotic String Theory, we try to solve the discrepancy between the unification scale predicted by this theory (≈ g_GUT× 5.27⋅ 10¹⁷ GeV) and the value deduced from LEP experiments (≈ 2⋅ 10¹⁶ GeV). A crucial ingredient in our solution is the presence at low energies of three generations of supersymmetric Higgses and vector-like colour triplets. As a by-product our analysis gives rise to a strategy which might be useful when constructing realistic models.

Citations

• Review of Particle Physics
• Vacuum configurations for superstrings
• Supergauge transformations in four dimensions
• Analysis of running coupling constant unification in string theory
• Uncertainties in coupling constant unification
• Flavor-changing interactions mediated by scalars at the weak scale
• Is the neutrino a goldstone particle?
• String consistency for unified model building
• Strings on orbifolds
• Partial-symmetries of weak interactions
• Consistent supergravity