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Measurement of W(+/-)Z production in proton-proton collisions at root s=7 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.
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Number of Authors: 2904
2012 (English)In: European Physical Journal C, ISSN 1434-6044, E-ISSN 1434-6052, Vol. 72, no 10, 2173- p.Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2012. Vol. 72, no 10, 2173- p.
Keyword [en]
Triple Gauge Couplings, Cross-Section, Limits, Decay, Lhc
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-107727DOI: 10.1140/epjc/s10052-012-2173-0ISI: 000310609100025Scopus ID: 2-s2.0-84869414246OAI: oai:DiVA.org:kth-107727DiVA: diva2:577780
Funder
Swedish Research Council
Note

QC 20121217. Author count: 2904.

Available from: 2012-12-17 Created: 2012-12-17 Last updated: 2017-12-06Bibliographically approved

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Strandberg, Jonas

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