Measurement of W(+/-)Z production in proton-proton collisions at root s=7 TeV with the ATLAS detector

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Abstract

A study of W(+/-)Z production in proton-proton collisions at root s = 7 TeV is presented using data corresponding to an integrated luminosity of 4.6 fb(-1) collected with the ATLAS detector at the Large Hadron Collider in 2011. In total, 317 candidates, with a background expectation of 68 +/- 10 events, are observed in double-leptonic decay final states with electrons, muons and missing transverse momentum. The total cross-section is determined to be sigma(tot)(WZ) = 19.0(-1.3)(+1.4)(stat.) +/- 0.9(syst.) +/- 0.4(lumi.) pb, consistent with the Standard Model expectation of 17.6(-1.0)(+1.1) pb. Limits on anomalous triple gauge boson couplings are derived using the transverse momentum spectrum of Z bosons in the selected events. The cross-section is also presented as a function of Z boson transverse momentum and diboson invariant mass.
Original languageUnknown
Pages (from-to)2173
JournalEuropean Physical Journal C: Particles and Fields
Volume72
Issue number10
DOIs
Publication statusPublished - 1 Jan 2012

Keywords

    Cite this

    @article{6d0292e2a2aa4d6bb2b75e298cd0d497,
    title = "Measurement of W(+/-)Z production in proton-proton collisions at root s=7 TeV with the ATLAS detector",
    abstract = "A study of W(+/-)Z production in proton-proton collisions at root s = 7 TeV is presented using data corresponding to an integrated luminosity of 4.6 fb(-1) collected with the ATLAS detector at the Large Hadron Collider in 2011. In total, 317 candidates, with a background expectation of 68 +/- 10 events, are observed in double-leptonic decay final states with electrons, muons and missing transverse momentum. The total cross-section is determined to be sigma(tot)(WZ) = 19.0(-1.3)(+1.4)(stat.) +/- 0.9(syst.) +/- 0.4(lumi.) pb, consistent with the Standard Model expectation of 17.6(-1.0)(+1.1) pb. Limits on anomalous triple gauge boson couplings are derived using the transverse momentum spectrum of Z bosons in the selected events. The cross-section is also presented as a function of Z boson transverse momentum and diboson invariant mass.",
    keywords = "DECAY, CROSS-SECTION, LIMITS, LHC, TRIPLE GAUGE COUPLINGS",
    author = "Wemans, {Andr{\'e} Jo{\~a}o Maur{\'i}cio Leit{\~a}o do Valle}",
    year = "2012",
    month = "1",
    day = "1",
    doi = "10.1140/epjc/s10052-012-2173-0",
    language = "Unknown",
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    journal = "European Physical Journal C: Particles and Fields",
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    TY - JOUR

    T1 - Measurement of W(+/-)Z production in proton-proton collisions at root s=7 TeV with the ATLAS detector

    AU - Wemans, André João Maurício Leitão do Valle

    PY - 2012/1/1

    Y1 - 2012/1/1

    N2 - A study of W(+/-)Z production in proton-proton collisions at root s = 7 TeV is presented using data corresponding to an integrated luminosity of 4.6 fb(-1) collected with the ATLAS detector at the Large Hadron Collider in 2011. In total, 317 candidates, with a background expectation of 68 +/- 10 events, are observed in double-leptonic decay final states with electrons, muons and missing transverse momentum. The total cross-section is determined to be sigma(tot)(WZ) = 19.0(-1.3)(+1.4)(stat.) +/- 0.9(syst.) +/- 0.4(lumi.) pb, consistent with the Standard Model expectation of 17.6(-1.0)(+1.1) pb. Limits on anomalous triple gauge boson couplings are derived using the transverse momentum spectrum of Z bosons in the selected events. The cross-section is also presented as a function of Z boson transverse momentum and diboson invariant mass.

    AB - A study of W(+/-)Z production in proton-proton collisions at root s = 7 TeV is presented using data corresponding to an integrated luminosity of 4.6 fb(-1) collected with the ATLAS detector at the Large Hadron Collider in 2011. In total, 317 candidates, with a background expectation of 68 +/- 10 events, are observed in double-leptonic decay final states with electrons, muons and missing transverse momentum. The total cross-section is determined to be sigma(tot)(WZ) = 19.0(-1.3)(+1.4)(stat.) +/- 0.9(syst.) +/- 0.4(lumi.) pb, consistent with the Standard Model expectation of 17.6(-1.0)(+1.1) pb. Limits on anomalous triple gauge boson couplings are derived using the transverse momentum spectrum of Z bosons in the selected events. The cross-section is also presented as a function of Z boson transverse momentum and diboson invariant mass.

    KW - DECAY

    KW - CROSS-SECTION

    KW - LIMITS

    KW - LHC

    KW - TRIPLE GAUGE COUPLINGS

    U2 - 10.1140/epjc/s10052-012-2173-0

    DO - 10.1140/epjc/s10052-012-2173-0

    M3 - Article

    VL - 72

    SP - 2173

    JO - European Physical Journal C: Particles and Fields

    JF - European Physical Journal C: Particles and Fields

    SN - 1434-6044

    IS - 10

    ER -