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Measurement of the top quark pair cross section with ATLAS in pp collisions at root s=7 TeV using final states with an electron or a muon and a hadronically decaying tau lepton
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
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Number of Authors: 2879
2012 (English)In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 717, no 1-3, 89-108 p.Article in journal (Refereed) Published
Abstract [en]

A measurement of the cross section of top quark pair production in proton-proton collisions recorded with the ATLAS detector at the Large Hadron Collider at a centre-of-mass energy of 7 TeV is reported. The data sample used corresponds to an integrated luminosity of 2.05 fb(-1). Events with an isolated electron or muon and a tau lePton decaying hadronically are used. In addition, a large missing transverse momentum and two or more energetic jets are required. At least one of the jets must be identified as originating from a b quark. The measured cross section, sigma(t (t) over bar) = 186 +/- 13 (stat.) +/- 20 (syst.) +/- 7 (lumi.) pb, is in good agreement with the Standard Model prediction.

Place, publisher, year, edition, pages
2012. Vol. 717, no 1-3, 89-108 p.
Keyword [en]
Top quark physics, Cross section, Lepton plus tau
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-107143DOI: 10.1016/j.physletb.2012.09.032ISI: 000310187700009Scopus ID: 2-s2.0-84867333466OAI: oai:DiVA.org:kth-107143DiVA: diva2:574760
Note

QC 20121206. Author count: 2879

Available from: 2012-12-06 Created: 2012-12-06 Last updated: 2017-12-07Bibliographically approved

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Strandberg, Jonas

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