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arXiv · 1006.4446

A six-dimensional gauge-Higgs unification model based on $E_6$ gauge symmetry

Cheng-Wei Chiang·Takaaki Nomura
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Abstract

We construct a six-dimensional gauge-Higgs unification model with the enlarged gauge group of $E_6$ on $S^2/Z_2$ orbifold compactification. The standard model particle contents and gauge symmetry are obtained by utilizing a monopole background field and imposing appropriate parity conditions on the orbifold. In particular, a realistic Higgs potential suitable for breaking the electroweak gauge symmetry is obtained without introducing extra matter or assuming an additional symmetry relation between the SU(2) isometry transformation on the $S^2$ and the gauge symmetry. The Higgs boson is a KK mode associated with the extra-dimensional components of gauge field. Its odd KK-parity makes it a stable particle, and thus a potential dark matter candidate in the model. We also compute the KK masses of all fields at tree level.

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Cheng-Wei Chiang, Takaaki Nomura. 2010-06-29. A six-dimensional gauge-Higgs unification model based on $E_6$ gauge symmetry. https://doi.org/10.1016/j.nuclphysb.2010.09.003

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