Measurement of the top quark pair production cross-section with ATLAS in the single lepton channel

Aad, G.; Abbott, B.; Abdallah, J.; Chudoba, Jiří; Gallus, Petr; Gunther, Jaroslav; Hruška, I.; Juránek, Vojtěch; Kepka, Oldřich; Kupčo, Alexander; Kůs, Vlastimil; Lipinský, L.; Lokajíček, Miloš; Marčišovský, Michal; Mikeštíková, Marcela; Myška, Miroslav; Němeček, Stanislav; Panušková, M.; Růžička, Pavel; Schovancová, Jaroslava; Šícho, Petr; Staroba, Pavel; Svatoš, Michal; Taševský, Marek; Tic, Tomáš; Valenta, J.; Vrba, Václav; Zeman, Martin

doi:https://dx.doi.org/10.1016/j.physletb.2012.03.083

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Measurement of the top quark pair production cross-section with ATLAS in the single lepton channel

1.

SYSNO ASEP	0389758
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Measurement of the top quark pair production cross-section with ATLAS in the single lepton channel
Author(s)	Aad, G. (DE) Abbott, B. (US) Abdallah, J. (ES) Chudoba, Jiří (FZU-D)_{RID, ORCID} Gallus, Petr (FZU-D)_RID Gunther, Jaroslav (FZU-D) Hruška, I. (CZ) Juránek, Vojtěch (FZU-D) Kepka, Oldřich (FZU-D)_{RID, ORCID} Kupčo, Alexander (FZU-D)_{RID, ORCID} Kůs, Vlastimil (FZU-D)_RID Lipinský, L. (CZ) Lokajíček, Miloš (FZU-D)_{RID, ORCID} Marčišovský, Michal (FZU-D)_{RID, ORCID} Mikeštíková, Marcela (FZU-D)_{RID, ORCID} Myška, Miroslav (FZU-D) Němeček, Stanislav (FZU-D)_{RID, ORCID} Panušková, M. (CZ) Růžička, Pavel (FZU-D) Schovancová, Jaroslava (FZU-D) Šícho, Petr (FZU-D)_{RID, ORCID} Staroba, Pavel (FZU-D)_{RID, ORCID} Svatoš, Michal (FZU-D)_{RID, ORCID} Taševský, Marek (FZU-D)_{RID, ORCID} Tic, Tomáš (FZU-D) Valenta, J. (CZ) Vrba, Václav (FZU-D)_{RID, ORCID} Zeman, Martin (FZU-D)_RID
Number of authors	3005
Source Title	Physics Letters. B. - : Elsevier - ISSN 0370-2693 Roč. 711, 3-4 (2012), s. 244-263
Number of pages	20 s.
Language	eng - English
Country	NL - Netherlands
Keywords	ATLAS ; LHC ; top physics ; top pair production ; QCD ; sensitivity ; cross section ; bottom particle identification
Subject RIV	BF - Elementary Particles and High Energy Physics
R&D Projects	LA08032 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
CEZ	AV0Z10100502 - FZU-D (2005-2011)
UT WOS	000304236400004
DOI	10.1016/j.physletb.2012.03.083
Annotation	A measurement of the production cross-section for top quark pairs (t tbar) in pp collisions at sqrt{s} = 7 TeV is presented using data recorded with the ATLAS detector at the Large Hadron Collider. Events are selected in the single lepton topology by requiring an electron or muon, large missing transverse momentum and at least three jets. With a data sample of 35/pb, two different multivariate methods, one of which uses b-quark jet identification while the other does not, use kinematic variables to obtain cross-section measurements of sigma (t tbar) = 187 +/- 11 (stat.) +18-17 (syst.) +/- 6 (lumi.) pb and sigma (t tbar) = 173 +/- 17 (stat.) +18-16 (syst.) +/- 6 (lumi.) pb} respectively. The two measurements are in agreement with each other and with QCD calculations. The first measurement has a better a priori sensitivity and constitutes the main result of this Letter.
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2013

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