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Measurement of the WZ cross section and triple gauge couplings in pp̅ collisions at √s=1.96  TeV

Author(s)
Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Paus, Christoph M. E.
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Abstract
This article describes the current most precise measurement of the WZ production cross section as well as limits on anomalous WWZ couplings at a center-of-mass energy of 1.96 TeV in proton-antiproton collisions for the Collider Detector at Fermilab (CDF). WZ candidates are reconstructed from decays containing three charged leptons and missing energy from a neutrino, where the charged leptons are either electrons or muons. Using data collected by the CDF II detector (7.1  fb[superscript -1] of integrated luminosity), 63 candidate events are observed with the expected background contributing 8±1 events. The measured total cross section σ(pp̅ →WZ)=3.93[subscript -0.53][superscript +]0.60(stat)[subscript -0.46][superscript +0.59](syst)   pb is in good agreement with the standard model prediction of 3.50±0.21. The same sample is used to set limits on anomalous WWZ couplings.
Date issued
2012-08
URI
http://hdl.handle.net/1721.1/74195
Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science
Journal
Physical Review D
Publisher
American Physical Society
Citation
Aaltonen, T. et al. “Measurement of the WZ cross section and triple gauge couplings in pp̅ collisions at √s=1.96  TeV.” Physical Review D 86.3 (2012). © 2012 American Physical Society
Version: Final published version
ISSN
1550-7998
1089-4918

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