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Status of the inert doublet model and the role of multileptons at the LHC
Stockholm University, Faculty of Science, The Oskar Klein Centre for Cosmo Particle Physics (OKC).
2012 (English)In: Physical Review D, ISSN 1550-7998, E-ISSN 1550-2368, Vol. 86, no 7, 075019- p.Article in journal (Refereed) Published
Abstract [en]

A feature of the inert doublet model (IDM) is to provide a dark matter candidate together with an alteration of both direct and indirect collider constraints that allow for a heavy Higgs boson. We study the IDM in light of recent results from Higgs searches at the Large Hadron Collider (LHC) in combination with dark matter direct detection limits from the XENON experiment. We ask under what conditions the IDM can still accommodate a heavy Higgs boson. We find that IDM scenarios with a Higgs boson in the mass range 160-600 GeV are ruled out only when all experimental constraints are combined. For models explaining only a fraction of the dark matter the limits are weakened, and IDMs with a heavy Higgs are allowed. We discuss the prospects for future detection of such IDM scenarios in the four-lepton plus missing energy channel at the LHC. This signal can show up in the first year of running at root s = 14 TeV, and we present detector-level studies for a few benchmark models.

Place, publisher, year, edition, pages
2012. Vol. 86, no 7, 075019- p.
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:su:diva-82970DOI: 10.1103/PhysRevD.86.075019ISI: 000309811600003OAI: oai:DiVA.org:su-82970DiVA: diva2:575580
Note

AuthorCount:4;

Available from: 2012-12-10 Created: 2012-12-03 Last updated: 2017-12-07Bibliographically approved

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