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Measurement of the W(+/-)Z production cross section and limits on anomalous triple gauge couplings 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.ORCID iD: 0000-0002-8913-0981
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2012 (English)In: Physics Letters B, ISSN 0370-2693, Vol. 709, no 4-5, 341-357 p.Article in journal (Refereed) Published
Abstract [en]

This Letter presents a measurement of W(+/-)Z production in 1.02 fb(-1) of pp collision data at root s = 7 TeV collected by the ATLAS experiment in 2011. Doubly leptonic decay events are selected with electrons, muons and missing transverse momentum in the final state. In total 71 candidates are observed, with a background expectation of 12.1 +/- 1.4(stat.)(-2.0)(+4.1)(syst.) events. The total cross section for W(+/-)Z production for Z/gamma* masses within the range 66 GeV to 116 GeV is determined to be sigma(tot)(WZ) = 20.5(-2.8)(+3.1)(stat.)(-1.3)(+1.4)(syst)(-0.8)(+0.9)(lumi.) pb, which is consistent with the Standard Model expectation of 17.3(0.8)(+1.3) pb. Limits on anomalous triple gauge boson couplings are extracted.

Place, publisher, year, edition, pages
2012. Vol. 709, no 4-5, 341-357 p.
Keyword [en]
Boson Couplings, Decay, Lep
National Category
Physical Sciences
URN: urn:nbn:se:kth:diva-100880DOI: 10.1016/j.physletb.2012.02.053ISI: 000302454700004ScopusID: 2-s2.0-84862776985OAI: diva2:545653
QC 20120821. Author count: 2998.Available from: 2012-08-21 Created: 2012-08-21Bibliographically approved

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Lafaye, RemiLund-Jensen, BengtStrandberg, Jonas
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