Aaltonen, T;
Adelman, J;
Akimoto, T;
Albrow, MG;
Alvarez Gonzalez, B;
Amerio, S;
Amidei, D;
... Zucchelli, S; + view all
(2008)
Measurement of the Single-Top-Quark Production Cross Section at CDF.
PHYS REV LETT
, 101
(25)
, Article 252001. 10.1103/PhysRevLett.101.252001.
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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.
Type: | Article |
---|---|
Title: | Measurement of the Single-Top-Quark Production Cross Section at CDF |
Open access status: | An open access version is available from UCL Discovery |
DOI: | 10.1103/PhysRevLett.101.252001 |
Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.101.252001 |
Language: | English |
Additional information: | © 2008 The American Physical Society |
Keywords: | COLLIDER DETECTOR, FERMILAB TEVATRON, COLLISIONS, PHYSICS |
UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
URI: | https://discovery.ucl.ac.uk/id/eprint/131651 |
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