Measurement of the W±Z production cross section and limits on anomalous triple gauge couplings in proton-proton collisions at √s = 7 TeV with the ATLAS detector

Authors	G. Aad [Unknown] et al. S. Bentvelsen A.P. Colijn P. de Jong L. de Nooij A.D. Doxiadis H. Garitaonandia M. Gosselink M.S. Kayl E. Koffeman H. Lee F. Linde J. Mechnich I. Mussche J.P. Ottersbach M. Rijpstra N. Ruckstuhl M. Tsiakiris E. van der Kraaij E. van der Poel Z. van Kesteren I. van Vulpen J.C. Vermeulen M. Vreeswijk
Publication date	2012
Journal	Physics Letters B
Volume \| Issue number	709 \| 4-5
Pages (from-to)	341-357
Organisations	Faculty of Science (FNWI) - Institute of Physics (IoP) - Institute for High Energy Physics (IHEF)
Abstract	This Letter presents a measurement of W±Z production in 1.02 fb−1 of pp collision data at √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/γ* masses within the range 66 GeV to 116 GeV is determined to be σWZtot = 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 17.30.8+1.3 pb. Limits on anomalous triple gauge boson couplings are extracted.
Document type	Article
Note	ATLAS Collaboration
Language	English
Published at	https://doi.org/10.1016/j.physletb.2012.02.053
Downloads	381269.pdf (Final published version)
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