Gauge-Higgs Unification from the Heterotic String

Details Gauge-Higgs Unification from the Heterotic String Gauge-Higgs Unification from the Heterotic String

2007-08-31

arxiv.org/abs/0708.4305v1

AIPConf.Proc.957:349-352,2007

Physics

High Energy Physics

High Energy Physics - Theory

Talk given at 13th International Symposium on Particles, Strings and Cosmology (PASCOS 07), London, England, 2-7 Jul 2007

Scientific paper

10.1063/1.2823799

We present a 6D orbifold model on $T^2/\Z2$ which emerges as intermediate step in the compactification of the heterotic string to the supersymmetric standard model in four dimensions. It has $\SU6$ gauge symmetry in the bulk and two pairs of inequivalent fixed points with unbroken $\SU5$ and $\SU2 \times \SU4$ symmetry, respectively. All anomalies are cancelled by the Green-Schwarz mechanism. Two quark-lepton generations are located at the $\SU5$ branes, the third family is composed of split bulk hypermultiplets. The model has vacua with partial or full gauge-Higgs unification and non-vanishing Yukawa couplings which generically avoid the unsuccessful $\SU5$ mass relations.

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