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Gauge-Higgs unification in the 5 dimensional E_6 and E_7 GUTs on orbifold

Naoyuki Haba·Yasuhiro Shimizu
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Abstract

We consider 5 dimensional E_6 and E_7 supersymmetric grand unified theories (GUTs) on an orbifold S^1/Z_2, in which the Higgs fields arise from the 5th components of the 5D gauge fields. We introduce matter fields in 5 dimensions, then the Yukawa interactions are induced from the gauge interactions among the 5th component of gauge fields and the bulk hyper-multiplets. The adjoint and fundamental representations of bulk matter fields can induce all Yukawa interactions of the standard model in E_6 GUT. Furthermore, realistic fermion mass hierarchies and flavor mixings with the CP violating phase can be reproduced by introducing the 4D brane localized fields and their interactions. E_7 GUT can produce all Yukawa interactions by introducing only adjoint matter hyper-multiplet in the bulk. The charge quantization and anomaly free structure on the 4D wall are satisfactory in our models.

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Naoyuki Haba, Yasuhiro Shimizu. 2003-12-24. Gauge-Higgs unification in the 5 dimensional E_6 and E_7 GUTs on orbifold. https://doi.org/10.1103/physrevd.67.095001%2010.1103%2Fphysrevd.69.059902

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