Higgs alignment and the top quark

@article{Eichten2021HiggsAA,
  title={Higgs alignment and the top quark},
  author={E. Eichten and K. Lane},
  journal={arXiv: High Energy Physics - Phenomenology},
  year={2021}
}
There is a surprising connection between the top quark and Higgs alignment in Gildener-Weinberg multi-Higgs doublet models. Were it not for the top quark and its large mass, the coupling of the 125 GeV Higgs boson $H$ to gauge bosons and fermions would be indistinguishable from those of the Standard Model Higgs. The top quark's coupling to a single Higgs doublet breaks this perfect alignment in higher orders of the Coleman-Weinberg loop expansion of the effective potential. But the effect is… Expand

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