Search for invisible decays of a Higgs boson using vector-boson fusion in pp collisions at (Formula Presented.) TeV with the ATLAS detector

The ATLAS collaboration

    Research output: Contribution to journalArticle

    Abstract

    A search for a Higgs boson produced via vector-boson fusion and decaying into invisible particles is presented, using 20.3 fb−1 of proton-proton collision data at a centre-of-mass energy of 8 TeV recorded by the ATLAS detector at the LHC. For a Higgs boson with a mass of 125 GeV, assuming the Standard Model production cross section, an upper bound of 0.28 is set on the branching fraction of H → invisible at 95% confidence level, where the expected upper limit is 0.31. The results are interpreted in models of Higgs-portal dark matter where the branching fraction limit is converted into upper bounds on the dark-matter-nucleon scattering cross section as a function of the dark-matter particle mass, and compared to results from the direct dark-matter detection experiments.

    Original languageEnglish (US)
    Article number172
    Pages (from-to)1-44
    Number of pages44
    JournalJournal of High Energy Physics
    Volume2016
    Issue number1
    DOIs
    StatePublished - Jan 1 2016

    Fingerprint

    Higgs bosons
    dark matter
    bosons
    fusion
    collisions
    detectors
    decay
    protons
    particle mass
    scattering cross sections
    center of mass
    confidence
    cross sections
    energy

    Keywords

    • Hadron-Hadron scattering
    • Higgs physics

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics

    Cite this

    Search for invisible decays of a Higgs boson using vector-boson fusion in pp collisions at (Formula Presented.) TeV with the ATLAS detector. / The ATLAS collaboration.

    In: Journal of High Energy Physics, Vol. 2016, No. 1, 172, 01.01.2016, p. 1-44.

    Research output: Contribution to journalArticle

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    abstract = "A search for a Higgs boson produced via vector-boson fusion and decaying into invisible particles is presented, using 20.3 fb−1 of proton-proton collision data at a centre-of-mass energy of 8 TeV recorded by the ATLAS detector at the LHC. For a Higgs boson with a mass of 125 GeV, assuming the Standard Model production cross section, an upper bound of 0.28 is set on the branching fraction of H → invisible at 95{\%} confidence level, where the expected upper limit is 0.31. The results are interpreted in models of Higgs-portal dark matter where the branching fraction limit is converted into upper bounds on the dark-matter-nucleon scattering cross section as a function of the dark-matter particle mass, and compared to results from the direct dark-matter detection experiments.",
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