uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
Measurement of the t(t)over-bar production cross section and top quark mass extraction using dilepton events in p(p)over-bar collisions
Show others and affiliations
2009 (English)In: Physics Letters B, ISSN 0370-2693, Vol. 679, no 3, 177-185 p.Article in journal (Refereed) Published
Abstract [en]

We present a measurement of the top quark pair production cross section in p (p) over bar collisions at root s = 1.96 TeV using approximately 1 fb(-1) collected with the DO detector. We consider decay channels containing two high p(T) charged leptons where one lepton is identified as an electron or a muon while the other lepton can be an electron, a muon or a hadronically decaying tau lepton. For a mass of the top quark of 170 GeV, the measured cross section is 7.5(-1.0)(+1.0)(stat)(-0.6)(+0.7)(syst)(-0.5)(+0.6)(lumi) pb. Using l tau events only, we measure: sigma(t (t) over bar) x B(t (t) over bar -> l tau b (b) over bar) = 0.13(-0.08)(+0.09)(stat)(-0.06)(+0.06)(syst)(-0.02)(+0.02)(lumi) pb. Comparing the measured cross section as a function of the mass of the top quark with a partial next-to-next-to leading order Quantum Chroniodynamics theoretical prediction, we extract a mass of the top quark of 171.5(-8.8)(+9-9) GeV, in agreement with direct measurements.

Place, publisher, year, edition, pages
2009. Vol. 679, no 3, 177-185 p.
National Category
Physical Sciences
URN: urn:nbn:se:uu:diva-128262DOI: 10.1016/j.physletb.2009.07.032ISI: 000269753300003OAI: oai:DiVA.org:uu-128262DiVA: diva2:331034
Available from: 2010-07-21 Created: 2010-07-20 Last updated: 2011-01-03Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text
By organisation
Uppsala UniversityDepartment of Physics and Astronomy
In the same journal
Physics Letters B
Physical Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 124 hits
ReferencesLink to record
Permanent link

Direct link