Evidence for Associated Production of a Single Top Quark and W Boson in pp Collisions at √s=7 TeV
Name
Chatrchyan-2013-Evidence for Associated Production of a Single Top Quark and W Boson.pdf
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Author(s)
Apyan, Aram
Bauer, Gerry P.
Bendavid, J.
Busza, Wit
Butz, Erik M.
Cali, Ivan Amos
Chan, Matthew Hans
Dutta, Valentina
Goncharov, Maxim
Hahn, Kristian Allan
Date Issued
January 2013
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Chatrchyan, S. et al. “Evidence for Associated Production of a Single Top Quark and W Boson in Pp Collisions at Sqrt[s]=7 TeV.” Physical Review Letters 110.2 (2013): [16 pages]. CrossRef. Web.
Version
Final published version
Abstract
Evidence is presented for the associated production of a single top quark and W boson in pp collisions at √s=7 TeV with the CMS experiment at the LHC. The analyzed data correspond to an integrated luminosity of 4.9 fb[superscript -1]. The measurement is performed using events with two leptons and a jet originated from a b quark. A multivariate analysis based on kinematic properties is utilized to separate the tt̅ background from the signal. The observed signal has a significance of 4.0σ and corresponds to a cross section of 16-4[superscript +5 ] pb, in agreement with the standard model expectation of 15.6±0.4-1.2[superscript +1.0] pb.
MIT Department
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution 3.0
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.110.022003
