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Measurements of four-lepton production in pp collisions at √s = 8 TeV with the ATLAS detector
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
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: 2828
2016 (English)In: European Physical Journal C, ISSN 1434-6044, E-ISSN 1434-6052, Vol. 76, no 1, 1-51 p., 6Article in journal (Refereed) PublishedText
Abstract [en]

Combined analyses of the Higgs boson production and decay rates as well as its coupling strengths to vector bosons and fermions are presented. The combinations include the results of the analyses of the H → γγ, ZZ, WW, Zγ, bb, ττ and μμ decay modes, and the constraints on the associated production with a pair of top quarks and on the off-shell coupling strengths of the Higgs boson. The results are based on the LHC proton-proton collision datasets, with integrated luminosities of up to 4.7 fb-1 at √S =7 TeV and 20.3 fb-1 at √S = 8 TeV, recorded by the ATLAS detector in 2011 and 2012. Combining all production modes and decay channels, the measured signal yield, normalised to the Standard Model expectation, is 1.18+0.15 -0.14. The observed Higgs boson production and decay rates are interpreted in a leading-order coupling framework, exploring a wide range of benchmark coupling models both with and without assumptions on the Higgs boson width and on the Standard Model particle content in loop processes. The data are found to be compatible with the Standard Model expectations for a Higgs boson at a mass of 125.36 GeV for all models considered.

Place, publisher, year, edition, pages
Springer-Verlag New York, 2016. Vol. 76, no 1, 1-51 p., 6
National Category
Subatomic Physics
Identifiers
URN: urn:nbn:se:kth:diva-181803DOI: 10.1140/epjc/s10052-015-3769-yISI: 000370645100005ScopusID: 2-s2.0-84953717940OAI: oai:DiVA.org:kth-181803DiVA: diva2:900581
Note

QC 20160204. QC 20160407

Available from: 2016-02-04 Created: 2016-02-04 Last updated: 2016-04-07Bibliographically approved

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Lund-Jensen, BengtMorley, AnthonyStrandberg, Jonas
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