CERN Accelerating science

Article
Report number	arXiv:1105.2284 ; DESY-11-075 ; CERN-PH-TH-2011-106 ; CERN-PH-TH-2011-106
Title	Higgs Portal Inflation
Author(s)	Lebedev, Oleg (DESY) ; Lee, Hyun Min (CERN)
Publication	2011
Imprint	12 May 2011
Number of pages	21
Note	Comments: 21 pages, 17 figures 23 pages, 17 figures, Version to appear in European Physical Journal C
In:	Eur. Phys. J. C 71 (2011) 1821
DOI	10.1140/epjc/s10052-011-1821-0
Subject category	Particle Physics - Phenomenology
Abstract	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.
Copyright/License	Preprint: © 2011-2025 CERN (License: CC-BY-3.0)

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