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Measurement of the top quark pair production cross section in the lepton plus jets channel in proton-antiproton collisions at root s=1.96 TeV
Stockholm University, Faculty of Science, Department of Physics.
2011 (English)In: Physical Review D, ISSN 1550-7998, Vol. 84, no 1, 012008- p.Article in journal (Refereed) Published
Abstract [en]

We present a measurement of the inclusive top quark pair production cross section in p (p) over bar collisions at root s = 1.96 TeV utilizing data corresponding to an integrated luminosity of 5.3 fb(-1) collected with the D0 detector at the Fermilab Tevatron Collider. We consider final states containing one high-p(T) isolated electron or muon and at least two jets, and we perform three analyses: one exploiting specific kinematic features of t (t) over bar events, the second using b-jet identification, and the third using both techniques to separate the t (t) over bar signal from the background. In the third case, we determine simultaneously the t (t) over bar cross section and the ratio of the production rates of W + heavy flavor jets and W + light flavor jets, which reduces the impact of the systematic uncertainties related to the background estimation. Assuming a top quark mass of 172.5 GeV, we obtain sigma(t (t) over bar) = 7.78(-0.64)(-0.77)pb. This result agrees with predictions of the standard model

Place, publisher, year, edition, pages
2011. Vol. 84, no 1, 012008- p.
National Category
Subatomic Physics
Research subject
URN: urn:nbn:se:su:diva-63020DOI: 10.1103/PhysRevD.84.012008ISI: 000293130500001OAI: diva2:446341
Swedish Research Council

Publikationen har totalt 425 författare, V. Abazov et al.

Available from: 2011-10-07 Created: 2011-10-07 Last updated: 2012-12-05Bibliographically approved

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Åsman, Barbro
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