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Tevatron Combination of Single-Top-Quark Cross Sections and Determination of the Magnitude of the Cabibbo-Kobayashi-Maskawa Matrix Element V-tb
Univ Helsinki, Dept Phys, Div High Energy Phys, FIN-00014 Helsinki, Finland.;Helsinki Inst Phys, FIN-00014 Helsinki, Finland..
Joint Inst Nucl Res, RU-141980 Dubna, Russia..
Univ Oklahoma, Norman, OK 73019 USA..
Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India..
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2015 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 115, no 15, 152003Article in journal (Refereed) Published
Abstract [en]

We present the final combination of CDF and D0 measurements of cross sections for single-top-quark production in proton-antiproton collisions at a center-of-mass energy of 1.96 TeV. The data correspond to total integrated luminosities of up to 9.7 fb(-1) per experiment. The t-channel cross section is measured to be sigma(t) = 2.25(-0.31)(+0.29) pb. We also present the combinations of the two-dimensional measurements of the s- vs t-channel cross section. In addition, we give the combination of the s + t channel cross section measurement resulting in sigma(s+t) = 3.30(-0.40)(+0.52) pb, without assuming the standard model value for the ratio sigma(s)/sigma(t). The resulting value of the magnitude of the top-to-bottom quark coupling is vertical bar V-tb vertical bar = 1.02(-0.05)(+0.06), corresponding to vertical bar V-tb vertical bar > 0.92 at the 95% C. L.

Place, publisher, year, edition, pages
2015. Vol. 115, no 15, 152003
National Category
Subatomic Physics Accelerator Physics and Instrumentation
URN: urn:nbn:se:uu:diva-265821DOI: 10.1103/PhysRevLett.115.152003ISI: 000362337400004OAI: oai:DiVA.org:uu-265821DiVA: diva2:866892
Available from: 2015-11-04 Created: 2015-11-03 Last updated: 2015-11-04Bibliographically approved

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Subatomic PhysicsAccelerator Physics and Instrumentation

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