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Search for a Standard Model Higgs Boson in the H -> ZZ -> l(+)l(-)v(v)over-bar Decay Channel with the ATLAS Detector
DESY, D-2000 Hamburg, Germany .
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.ORCID iD: 0000-0002-8913-0981
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Number of Authors: 3025
2011 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 107, no 22, 221802- p.Article in journal (Refereed) Published
Abstract [en]

A search for a heavy standard model Higgs boson decaying via H -> ZZ -> l(+)l(-)v (v) over bar, where l = e, mu, is presented. It is based on proton-proton collision data at root s = 7 TeV, collected by the ATLAS experiment at the LHC in the first half of 2011 and corresponding to an integrated luminosity of 1.04 fb(-1). The data are compared to the expected standard model backgrounds. The data and the background expectations are found to be in agreement and upper limits are placed on the Higgs boson production cross section over the entire mass window considered; in particular, the production of a standard model Higgs boson is excluded in the region 340 < m(H) < 450 GeV at the 95% confidence level.

Place, publisher, year, edition, pages
2011. Vol. 107, no 22, 221802- p.
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Physical Sciences
URN: urn:nbn:se:kth:diva-52603DOI: 10.1103/PhysRevLett.107.221802ISI: 000297292200001ScopusID: 2-s2.0-81855161474OAI: diva2:467187
Swedish Research Council
QC 20111219. Author count: 3025.Available from: 2011-12-19 Created: 2011-12-19 Last updated: 2012-02-01Bibliographically approved

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Grahn, Karl-JohanLund-Jensen, BengtStrandberg, Jonas
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