Exploring the Higgs portal with 10 fb−1 at the LHC

2011/12/31 by Brian Batell, Stefania Gori, Lian-Tao Wang · 2 citations
Physics and Astronomy · #Boson #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Gauge (firearms) #Gluon #Higgs boson #Higgs field #Higgs mechanism #Large Hadron Collider #Nuclear physics #Parameter space #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Quark #Scalar (mathematics) #Standard Model (mathematical formulation) #Statistics #hep-ph

paper · pdf · doi:10.1007/jhep06(2012)172

27 pages, 11 figures; v2: references added, correction to scalar form factor, numerical results updated with Moriond 2012 data, conclusions unchanged

openalex publication_date 2012/06/01 · arxiv created 2012/07/03 · arxiv updated 2015/06/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We consider the impact of new exotic colored and/or charged matter interacting through the Higgs portal on Standard Model Higgs boson searches at the LHC. Such Higgs portal couplings can induce shifts in the effective Higgs-gluon-gluon and Higgs-photon-photon couplings, thus modifying the Higgs production and decay patterns. We consider two possible interpretations of the current LHC Higgs searches based on ~ 5/fb of data at each detector: 1) a Higgs boson in the mass range (124-126) GeV and 2) a `hidden' heavy Higgs boson which is underproduced due to the suppression of its gluon fusion production cross section. We first perform a model independent analysis of the allowed sizes of such shifts in light of the current LHC data. As a class of possible candidates for new physics which gives rise to such shifts, we investigate the effects of new scalar multiplets charged under the Standard Model gauge symmetries. We determine the scalar parameter space that is allowed by current LHC Higgs searches, and compare with complementary LHC searches that are sensitive to the direct production of colored scalar states.

Citations

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• LHC Evidence Of A 126 GeV Higgs Boson From H → γγ With Three And Four Generations
• Production of a composite Higgs boson
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• Focus point supersymmetry redux
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• Global Conservation Laws and Massless Particles
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• Constraints on the MSSM from the Higgs sector
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• Modifications to the properties of the Higgs boson
• Broken Symmetry and the Mass of Gauge Vector Mesons
• Top-quark pair plus large missing energy at the LHC
• A Model of Leptons
• Implications of a 125 GeV Higgs boson for the MSSM and low-scale supersymmetry breaking
• Higgs underproduction at the LHC
• Can WIMP dark matter overcome the nightmare scenario?
• Gauge singlet scalars as cold dark matter

Cited by

• Δr in the Two-Higgs-Doublet Model at full one loop level—and beyond
• Polarized vector boson scattering in the fully leptonic WZ and ZZ channels at the LHC