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Model-independent Measurement of $t$-channel Single Top Quark Production in $p\bar{p}$ Collisions at $\sqrt{s}=1.96$ TeV
Stockholm University, Faculty of Science, Department of Physics. (Elementarpartikelfysik)
2011 (English)In: Physics Letters B, ISSN 0370-2693, Vol. 705, no 4, 313-319 p.Article in journal (Refereed) Published
Abstract [en]

We present a model-independent measurement of t-channel electroweak production of single top quarks in p collisions at root s = 1.96 TeV. Using 5.4 fb(-1) of integrated luminosity collected by the DO detector at the Fermilab Tevatron Collider, and selecting events containing an isolated electron or muon, missing transverse energy and one or two jets originating from the fragmentation of b quarks, we measure a cross section sigma (p (p) over bar -> tqb + X) = 2.90 +/- 0.59 (stat + syst) pb for a top quark mass of 172.5 GeV. The probability of the background to fluctuate and produce a signal as large as the one observed is 1.6 x 10(-8), corresponding to a significance of 5.5 standard deviations.

Place, publisher, year, edition, pages
2011. Vol. 705, no 4, 313-319 p.
National Category
Subatomic Physics
Research subject
URN: urn:nbn:se:su:diva-63779DOI: 10.1016/j.physletb.2011.10.035ISI: 000297234100005OAI: diva2:452438
Swedish Research Council
Publikationen har totalt 421 författare, V. Abazov et al.Available from: 2011-10-30 Created: 2011-10-30 Last updated: 2012-02-28Bibliographically approved

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Åsman, Barbro
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