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Planck scale unification in a supersymmetric Standard Model

Howl, R. and King, S.F. (2007) Planck scale unification in a supersymmetric Standard Model Physics Letters B, 652, (5-6), pp. 331-337. (doi:10.1016/j.physletb.2007.07.035).

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We show how gauge coupling unification near the Planck scale Mpnot, vert, similar1019 GeV can be achieved in the framework of supersymmetry, facilitating a full unification of all forces with gravity. Below the conventional GUT scale MGUTnot, vert, similar1016 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 ? problem of the MSSM can be resolved.

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Published date: 6 September 2007


Local EPrints ID: 57310
ISSN: 0370-2693
PURE UUID: 50be4e78-1cd1-47ba-9c71-e34aac05b53f

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Date deposited: 14 Aug 2008
Last modified: 17 Jul 2017 14:29

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Author: R. Howl
Author: S.F. King

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