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Search for WW and WZ production in lepton plus jets final state at CDF

CollaborationWith : Clark, Allan Geoffrey / Garcia Navarro, Jose Enrique / Vallecorsa, Sofia / Wu, Xin
Published in Physical Review. D. 2009, vol. 79, no. 11, 112011
Abstract We present a search for WW and WZ production in final states that contain a charged lepton (electron or muon) and at least two jets, produced in s√=1.96  TeV pp collisions at the Fermilab Tevatron, using data corresponding to 1.2  fb−1 of integrated luminosity collected with the CDF II detector. Diboson production in this decay channel has yet to be observed at hadron colliders due to the large single W plus jets background. An artificial neural network has been developed to increase signal sensitivity, as compared with an event selection based on conventional cuts. We set a 95% confidence level upper limit of σWW×BR(W→ℓνℓ,W→jets)+σWZ×BR(W→ℓνℓ,Z→jets)<2.88  pb, which is consistent with the standard model next-to-leading-order cross section calculation for this decay channel of 2.09±0.12  pb.
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CDF COLLABORATION. Search for WW and WZ production in lepton plus jets final state at CDF. In: Physical Review. D, 2009, vol. 79, n° 11, p. 112011. doi: 10.1103/PhysRevD.79.112011 https://archive-ouverte.unige.ch/unige:38608

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Deposited on : 2014-07-14

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