2007/05/29 by Richard Howl, R. Howl, Stephen F. King +1 · 3 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Noncommutative and Quantum Gravity Theories #Particle physics theoretical and experimental studies #hep-ph
paper · pdf · doi:10.1016/j.physletb.2007.07.035
published as Phys.Lett.B652:331-337,2007 · Minor corrections. 12 pages, 2 figures
arxiv created 2007/05/29 · openalex publication_date 2007/07/26 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/29
We show how gauge coupling unification near the Planck scale MP∼ 1019 GeV can be achieved in the framework of supersymmetry, facilitating a full unification of all forces with gravity. Below the conventional GUT scale MGUT∼ 1016 GeV physics is described by a Supersymmetric Standard Model whose particle content is that of three complete 27 representations of the gauge group E6. Above the conventional GUT scale the gauge group corresponds to a left-right symmetric Supersymmetric Pati-Salam model, which may be regarded as a ``surrogate SUSY GUT'' with all the nice features of SO(10) but without proton decay or doublet-triplet splitting problems. At the TeV scale the extra exotic states may be discovered at the LHC, providing an observable footprint of an underlying E6 gauge group broken at the Planck scale. Assuming an additional low energy U(1)X gauge group, identified as a non-trivial combination of diagonal E6 generators, the μ problem of the MSSM can be resolved.