Measurement of the t(t)over-bar production cross section in p(p)over-bar collisions at root s=1.96 TeV in dilepton final states

We present a measurement of the top quark pair (a) production cross section in pp collisions at root s = 1.96 TeV using events with two charged leptons in the final state. This analysis utilizes an integrated luminosity of 224-243 pb(-1) collected with the DO detector at the Fermilab Tevatron Collid...

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Bibliographic Details
Published in:Physics letters. B 2005-10, Vol.626, p.55
Main Authors: Abazov, V. M., Åsman, Barbro, Clément, Christophe, Gollub, Nils, Lager, Sara, Strandberg, Jonas, Zverev, E.G., et al
Format: Article
Language:English
Subjects:
Fysik
NATURAL SCIENCES
NATURVETENSKAP
Physics
Online Access:Get full text
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Summary:We present a measurement of the top quark pair (a) production cross section in pp collisions at root s = 1.96 TeV using events with two charged leptons in the final state. This analysis utilizes an integrated luminosity of 224-243 pb(-1) collected with the DO detector at the Fermilab Tevatron Collider. We observe 13 events in the e(+)e(-), e mu and mu(+)mu(-) channels with an expected background of 3.2 +/- 0.7 events. For a top quark mass of 175 GeV, we measure a t (t) over bar production cross section of sigma(t (t) over bar) = 8.6(-2.7)(+3.2) (stat) +/- 1.1(syst) +/- 0.6(lumi) pb, consistent with the standard model prediction.
ISSN:0370-2693
1873-2445
DOI:10.1016/j.physletb.2005.08.105