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首页> 外文期刊>Physical review, D. Particles, fields, gravitation, and cosmology >Perturbative extension of the standard model with a 125 GeV Higgs boson and magnetic dark matter
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Perturbative extension of the standard model with a 125 GeV Higgs boson and magnetic dark matter

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摘要

We introduce a perturbative extension of the standard model featuring a new dark matter sector together with a 125 GeV Higgs. The new sector consists of a vectorlike heavy electron (E), a complex scalar electron (S) and a standard model singlet Dirac fermion (χ). The interactions among the dark matter candidate χ and the standard model particles occur via loop-induced processes involving the operator Sēχy, with y being the Yukawa-like coupling. The model is an explicit underlying realization of the light magnetic dark matter effective model introduced earlier to alleviate the tension among several direct dark matter search experiments. We further constrain the parameters of the underlying theory using results from the Large Hadron Collider. The extension can accommodate the recently observed properties of the Higgs-like state and leads to interesting predictions. Finally, we show that the model's collider phenomenology and constraints nicely complement the ones coming from dark matter searches.

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