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    Observation of the diphoton decay of the Higgs boson and measurement of its properties

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    Bean_diphoton_decay2014.pdf (2.370Mb)
    Issue Date
    2014-11-12
    Author
    CMS Collaboration
    Bean, Alice
    Publisher
    Springer Verlag
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
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    Abstract
    Observation of the diphoton decay mode of the recently discovered Higgs boson and measurement of some of its properties are reported. The analysis uses the entire dataset collected by the CMS experiment in proton-proton collisions during the 2011 and 2012 LHC running periods. The data samples correspond to integrated luminosities of 5.1fb-1at s√=7TeV and 19.7fb-1at 8TeV . A clear signal is observed in the diphoton channel at a mass close to 125GeV with a local significance of 5.7σ, where a significance of 5.2σ is expected for the standard model Higgs boson. The mass is measured to be 124.70±0.34GeV=124.70±0.31(stat)±0.15(syst)GeV , and the best-fit signal strength relative to the standard model prediction is 1.14+0.26−0.23=1.14±0.21(stat) +0.09−0.05(syst) +0.13−0.09(theo). Additional measurements include the signal strength modifiers associated with different production mechanisms, and hypothesis tests between spin-0 and spin-2 models.
    Description
    This is the published version.
    URI
    http://hdl.handle.net/1808/19348
    DOI
    https://doi.org/10.1140/epjc/s10052-014-3076-z
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    • Physics & Astronomy Scholarly Works [1713]
    Citation
    CMS Collaboration. "Observation of the diphoton decay of the Higgs boson and measurement of its properties." The European Physical Journal C. October, 2014: v74(10). http://dx.doi.org/10.1140/epjc/s10052-014-3076-z

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    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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