Search for WW and WZ production in lepton plus jets final state at CDF
Name
Aaltonen-2009-Search for WW and WZ.pdf
Size
1.61 MB
Format
Adobe PDF
Checksum (MD5)
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Author(s)
Xie, Si
Knuteson, Bruce O.
Henderson, C.
Hahn, Kristian Allan
Gomez-Ceballos, Guillelmo
Choudalakis, Georgios
Paus, Christoph M. E.
Makhoul, Khaldoun
Goncharov, Maxim
Bauer, Gerry P
Date Issued
June 2009
Journal
Physical Review D
Publisher
American Physical Society
Citation
CDF Collaboration et al. “Search for WW and WZ production in lepton plus jets final state at CDF.” Physical Review D 79.11 (2009): 112011. © 2009 The American Physical Society
Version
Final published version
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 pp̅ collisions at the Fermilab Tevatron, using data corresponding to 1.2 fb[superscript -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 σ_(WW)×BR(W→ℓνℓ,W→jets)+σ[subscript WZ]×BR(W→ℓν_ℓ,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.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
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DOI of Published Version
http://dx.doi.org/10.1103/PhysRevD.79.112011
