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Observation of Electroweak Single Top-Quark Production

Author(s)
Xie, Si; Knuteson, Bruce O.; Henderson, C.; Hahn, Kristian Allan; Goncharov, Maxim; Gomez-Ceballos, Guillelmo; Choudalakis, Georgios; Paus, Christoph M. E.; Makhoul, Khaldoun; Bauer, Gerry P; ... Show more Show less
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Abstract
We report the observation of single top-quark production using 3.2  fb[superscript -1] of pp̅ collision data with √s=1.96  TeV collected by the Collider Detector at Fermilab. The significance of the observed data is 5.0 standard deviations, and the expected sensitivity for standard model production and decay is in excess of 5.9 standard deviations. Assuming m[subscript t]=175  GeV/c[superscript 2], we measure a cross section of 2.3[subscript -0.5][superscript +0.6](stat+syst)  pb, extract the CKM matrix-element value |V[subscript tb]|=0.91±0.11(stat+syst)±0.07(theory), and set the limit |V[subscript tb]|>0.71 at the 95% C.L.
Date issued
2009-08
URI
http://hdl.handle.net/1721.1/52314
Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
CDF Collaboration et al. “Observation of Electroweak Single Top-Quark Production.” Physical Review Letters 103.9 (2009): 092002. © 2009 The American Physical Society
Version: Final published version
ISSN
0031-9007

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