A search for top squarks with R-parity-violating decays to all-hadronic final states with the ATLAS detector in √s = 8 TeV proton-proton collisions

The ATLAS collaboration

    Research output: Contribution to journalArticle

    Abstract

    A search for the pair production of top squarks, each with R-parity-violating decays into two Standard Model quarks, is performed using 17.4 fb−1 of √s = 8 TeV proton-proton collision data recorded by the ATLAS experiment at the LHC. Each top squark is assumed to decay to a b- and an s-quark, leading to four quarks in the final state. Background discrimination is achieved with the use of b-tagging and selections on the mass and substructure of large-radius jets, providing sensitivity to top squark masses as low as 100 GeV. No evidence of an excess beyond the Standard Model background prediction is observed and top squarks decaying to b¯ s¯ are excluded for top squark masses in the range 100 ≤ mt≤ 315 GeV at 95% confidence level.

    Original languageEnglish (US)
    Article number67
    Pages (from-to)1-49
    Number of pages49
    JournalJournal of High Energy Physics
    Volume2016
    Issue number6
    DOIs
    StatePublished - Jun 1 2016

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    parity
    quarks
    collisions
    protons
    detectors
    decay
    pair production
    substructures
    marking
    discrimination
    confidence
    radii
    sensitivity
    predictions

    Keywords

    • Hadron-Hadron scattering (experiments)

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics

    Cite this

    A search for top squarks with R-parity-violating decays to all-hadronic final states with the ATLAS detector in √s = 8 TeV proton-proton collisions. / The ATLAS collaboration.

    In: Journal of High Energy Physics, Vol. 2016, No. 6, 67, 01.06.2016, p. 1-49.

    Research output: Contribution to journalArticle

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    abstract = "A search for the pair production of top squarks, each with R-parity-violating decays into two Standard Model quarks, is performed using 17.4 fb−1 of √s = 8 TeV proton-proton collision data recorded by the ATLAS experiment at the LHC. Each top squark is assumed to decay to a b- and an s-quark, leading to four quarks in the final state. Background discrimination is achieved with the use of b-tagging and selections on the mass and substructure of large-radius jets, providing sensitivity to top squark masses as low as 100 GeV. No evidence of an excess beyond the Standard Model background prediction is observed and top squarks decaying to b¯ s¯ are excluded for top squark masses in the range 100 ≤ mt≤ 315 GeV at 95{\%} confidence level.",
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