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

Aaltonen T.
•
Adelman J.
•
Akimoto T.
altro
Zucchelli S.
2008
  • journal article

Periodico
PHYSICAL REVIEW LETTERS
Abstract
We report a measurement of the single-top-quark production cross section in 2.2 fb(-1) of p (p) over bar collision data collected by the Collider Detector at Fermilab at root 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 vertical bar V(tb)vertical bar 0.88(-0.12)(+0.13)(stat + syst) +/- 0.07(theory), and set the limit vertical bar V(tb)vertical bar > 0.66 at the 95% C.L.
DOI
10.1103/PhysRevLett.101.252001
WOS
WOS:000261891200017
Archivio
http://hdl.handle.net/11390/849202
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-57949113388
Diritti
metadata only access
Scopus© citazioni
65
Data di acquisizione
Jun 7, 2022
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Web of Science© citazioni
48
Data di acquisizione
Mar 28, 2024
Visualizzazioni
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Data di acquisizione
Apr 19, 2024
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