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Search for the Standard Model Higgs boson in the decay channel H -> ZZ((*)) -> 4l with 4.8 fb(-1) of pp collision data at root s=7 TeV with ATLAS
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- Åsman, Barbro (author)
- Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC),Elementarpartikelfysik
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- Bohm, Christian (author)
- Stockholms universitet,Fysikum,Systemfysik,Oskar Klein-centrum för kosmopartikelfysik (OKC),Elementarpartikelfysik
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- Clément, Christophe (author)
- Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC),Elementarpartikelfysik
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- Aad, G. (author)
- Zwalinski, L. (author)
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- (creator_code:org_t)
- Elsevier BV, 2012
- 2012
- English.
- In: Physics Letters B. - : Elsevier BV. - 0370-2693 .- 1873-2445. ; 710:3, s. 383-402
- Journal article (peer-reviewed)
Abstract
Subject headings
Close
- This Letter presents a search for the Standard Model Higgs boson in the decay channel H -> ZZ((*)) -> l(+)l(-)l(-)+l(')-, where l,l' = e or mu, using proton-proton collisions at root s = 7 TeV recorded with the ATLAS detector and corresponding to an integrated luminosity of 4.8 fb(-1). The four-lepton invariant mass distribution is compared with Standard Model background expectations to derive upper limits on the cross section of a Standard Model Higgs boson with a mass between 110 GeV and 600 GeV. The mass ranges 134-156 GeV, 182-233 GeV, 256-265 GeV and 268-415 GeV are excluded at the 95% confidence level. The largest upward deviations from the background-only hypothesis are observed for Higgs boson masses of 125 GeV, 244 GeV and 500 GeV with local significances of 2.1, 2.2 and 2.1 standard deviations, respectively. Once the look-elsewhere effect is considered, none of these excesses are significant.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- LHC
- ATLAS
- Higgs
- Leptons
Publication and Content Type
- ref (subject category)
- art (subject category)
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- Physics Letters B (Search for host publication in LIBRIS)
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