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Observation of Single Top-Quark Production
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2009 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 103, no 9, 092001- p.Article in journal (Refereed) Published
Abstract [en]

We report observation of the electroweak production of single top quarks in pp collisions at s=1.96 TeV based on 2.3 fb(-1) of data collected by the D0 detector at the Fermilab Tevatron Collider. Using events containing an isolated electron or muon and missing transverse energy, together with jets originating from the fragmentation of b quarks, we measure a cross section of sigma(pp -> tb+X,tqb+X)=3.94 +/- 0.88 pb. The probability to measure a cross section at this value or higher in the absence of signal is 2.5x10(-7), corresponding to a 5.0 standard deviation significance for the observation.

Place, publisher, year, edition, pages
2009. Vol. 103, no 9, 092001- p.
National Category
Physical Sciences
URN: urn:nbn:se:uu:diva-128255DOI: 10.1103/PhysRevLett.103.092001ISI: 000269718500021OAI: oai:DiVA.org:uu-128255DiVA: diva2:330988
Available from: 2010-07-20 Created: 2010-07-20 Last updated: 2011-01-03Bibliographically approved

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Uppsala UniversityDepartment of Physics and Astronomy
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