2011/10/31 by Ian Low, Pedro Schwaller, Gabe Shaughnessy +1 · 2 citations
Physics and Astronomy · #Boson #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark matter #Higgs boson #Large Hadron Collider #Minimal Supersymmetric Standard Model #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Standard Model (mathematical formulation) #Upper and lower bounds #hep-ex #hep-ph
paper · pdf · doi:10.1103/physrevd.85.015009
published as Phys. Rev. D 85, 015009 (2012) · 21 pages, 7 pages
arxiv created 2012/01/18 · openalex publication_date 2012/01/18 · arxiv updated 2012/01/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Current limits from the Large Hadron Collider exclude a standard model-like Higgs mass above 150 GeV, by placing an upper bound on the Higgs production rate. We emphasize that, alternatively, the limit could be interpreted as a lower bound on the total decay width of the Higgs boson. If the invisible decay width of the Higgs is of the same order as the visible decay width, a heavy Higgs boson could be consistent with null results from current searches. We propose a method to infer the invisible decay of the Higgs by using the width of the measured h\ensuremath→ZZ\ensuremath→4\ensuremathℓ line shape, and study the effect on the width extraction due to a reduced signal strength. Assuming the invisible decay product is the dark matter, we show that minimal models are tightly constrained by limits from Higgs searches at the LHC and direct detection experiments of dark matter, unless the relic density constraint is relaxed.