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Measurement of the Single-Top-Quark Production Cross Section at CDF

Publication ,  Journal Article
Aaltonen, T; others,
Published in: Physical Review Letters
2008

We report a measurement of the single-top-quark production cross section in 2.2  fb-1 of pp̅ collision data collected by the Collider Detector at Fermilab at sqrt[s]=1.96  TeV. Candidate events are classified as signal-like by three parallel analyses which use likelihood, matrix element, and neural network discriminants. These results are combined in order to improve the sensitivity. We observe a signal consistent with the standard model prediction, but inconsistent with the background-only model by 3.7 standard deviations with a median expected sensitivity of 4.9 standard deviations. We measure a cross section of 2.2-0.6+0.7(stat+syst)  pb, extract the Cabibbo-Kobayashi-Maskawa matrix-element value |Vtb|=0.88-0.12+0.13(stat+syst) ± 0.07(theory), and set the limit |Vtb|>0.66 at the 95% C.L.

Duke Scholars

Published In

Physical Review Letters

Publication Date

2008

Volume

101

Issue

25

Start / End Page

252001

Related Subject Headings

  • General Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences
 

Citation

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Aaltonen, T., & others, . (2008). Measurement of the Single-Top-Quark Production Cross Section at CDF. Physical Review Letters, 101(25), 252001.
Aaltonen, T., and T. others. “Measurement of the Single-Top-Quark Production Cross Section at CDF.” Physical Review Letters 101, no. 25 (2008): 252001.
Aaltonen T, others. Measurement of the Single-Top-Quark Production Cross Section at CDF. Physical Review Letters. 2008;101(25):252001.
Aaltonen, T., and T. others. “Measurement of the Single-Top-Quark Production Cross Section at CDF.” Physical Review Letters, vol. 101, no. 25, 2008, p. 252001.
Aaltonen T, others. Measurement of the Single-Top-Quark Production Cross Section at CDF. Physical Review Letters. 2008;101(25):252001.

Published In

Physical Review Letters

Publication Date

2008

Volume

101

Issue

25

Start / End Page

252001

Related Subject Headings

  • General Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences