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arXiv · 1603.03603

Minimal conformal extensions of the Higgs sector

Alexander J. Helmboldt·Pascal Humbert·Manfred Lindner·Juri Smirnov
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Abstract

In this work we find the minimal extension of the Standard Model's Higgs sector which can lead to a light Higgs boson via radiative symmetry breaking and is consistent with the phenomenological requirements for a low-energy realization of a conformal theory. The model which turns out to be stable under renormalization group translations is an extension of the Standard Model by two scalar fields, one of which acquires a finite vacuum expectation value and therefore mixes into the physical Higgs. We find that the minimal model predicts a sizable amount of mixing which makes it testable at a collider. In addition to the physical Higgs, the theory's scalar spectrum contains one light and one heavy boson. The heavy scalar's properties render it a potential dark matter candidate.

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Alexander J. Helmboldt, Pascal Humbert, Manfred Lindner, Juri Smirnov. 2017-08-14. Minimal conformal extensions of the Higgs sector. https://doi.org/10.1007/jhep07(2017)113

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