Higgs Portal Inflation

Details Higgs Portal Inflation Higgs Portal Inflation

2011-05-11

arxiv.org/abs/1105.2284v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

23 pages, 17 figures, Version to appear in European Physical Journal C

Scientific paper

The Higgs sector of the Standard Model offers a unique opportunity to probe the hidden sector. The Higgs squared operator is the only dimension two operator which is Lorentz and gauge invariant. It can therefore couple both to scalar curvature and the hidden sector at the dim--4 level. We consider the possibility that a combination of the Higgs and a singlet from the hidden sector plays the role of inflaton, due to their large couplings to gravity. This implies that the quartic couplings satisfy certain constraints which leads to distinct low energy phenomenology, including Higgs signals at the LHC. We also address the unitarity issues and show that our analysis survives the unitarization procedure.

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