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

G. Aad; Mogens Dam; Nele Maria Philomena Boelaert; Jørgen Beck Hansen; John Renner Hansen; Peter Henrik Hansen; Jørn Dines Hansen; Morten Dam Jørgensen; Simon Johann Franz Heisterkamp; Esben Bryndt Klinkby; Sascha Mehlhase; Björn Stefan Nilsson; Troels Christian Petersen; Stefania Xella; Ask Emil Løvschall-Jensen

doi:10.1016/j.physletb.2012.03.083

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

G. Aad, Mogens Dam, Nele Maria Philomena Boelaert, Jørgen Beck Hansen, John Renner Hansen, Peter Henrik Hansen, Jørn Dines Hansen, Morten Dam Jørgensen, Simon Johann Franz Heisterkamp, Esben Bryndt Klinkby, Sascha Mehlhase, Björn Stefan Nilsson, Troels Christian Petersen, Stefania Xella, Ask Emil Løvschall-Jensen

68 Citationer (Scopus)

Abstract

A measurement of the production cross-section for top quark pairs (tt-) in pp collisions at s=7TeV 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 ^-1 , 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 σtt-=187±11(stat.)-17+18(syst.)±6(lumi.)pb and σtt-=173±17(stat.)-16+18(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.

Originalsprog	Engelsk
Tidsskrift	Physics Letters B
Vol/bind	711
Udgave nummer	3-4
Sider (fra-til)	244-263
ISSN	0370-2693
DOI	https://doi.org/10.1016/j.physletb.2012.03.083
Status	Udgivet - 15 maj 2012

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10.1016/j.physletb.2012.03.083

Citationsformater

Aad, G., Dam, M., Boelaert, N. M. P., Hansen, J. B., Hansen, J. R., Hansen, P. H., Hansen, J. D., Jørgensen, M. D., Heisterkamp, S. J. F., Klinkby, E. B., Mehlhase, S., Nilsson, B. S., Petersen, T. C., Xella, S., & Løvschall-Jensen, A. E. (2012). Measurement of the top quark pair production cross-section with ATLAS in the single lepton channel. Physics Letters B, 711(3-4), 244-263. https://doi.org/10.1016/j.physletb.2012.03.083

Aad, G, Dam, M, Boelaert, NMP, Hansen, JB , Hansen, JR , Hansen, PH , Hansen, JD, Jørgensen, MD, Heisterkamp, SJF, Klinkby, EB, Mehlhase, S, Nilsson, BS, Petersen, TC , Xella, S & Løvschall-Jensen, AE 2012, 'Measurement of the top quark pair production cross-section with ATLAS in the single lepton channel', Physics Letters B, bind 711, nr. 3-4, s. 244-263. https://doi.org/10.1016/j.physletb.2012.03.083

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

abstract = " A measurement of the production cross-section for top quark pairs (tt-) in pp collisions at s=7TeV 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 -1 , 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 σtt-=187±11(stat.)-17+18(syst.)±6(lumi.)pb and σtt-=173±17(stat.)-16+18(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.",

author = "G. Aad and Mogens Dam and Boelaert, {Nele Maria Philomena} and Hansen, {J{\o}rgen Beck} and Hansen, {John Renner} and Hansen, {Peter Henrik} and Hansen, {J{\o}rn Dines} and J{\o}rgensen, {Morten Dam} and Heisterkamp, {Simon Johann Franz} and Klinkby, {Esben Bryndt} and Sascha Mehlhase and Nilsson, {Bj{\"o}rn Stefan} and Petersen, {Troels Christian} and Stefania Xella and L{\o}vschall-Jensen, {Ask Emil}",

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T1 - Measurement of the top quark pair production cross-section with ATLAS in the single lepton channel

AU - Aad, G.

AU - Dam, Mogens

AU - Boelaert, Nele Maria Philomena

AU - Hansen, Jørgen Beck

AU - Hansen, John Renner

AU - Hansen, Peter Henrik

AU - Hansen, Jørn Dines

AU - Jørgensen, Morten Dam

AU - Heisterkamp, Simon Johann Franz

AU - Klinkby, Esben Bryndt

AU - Mehlhase, Sascha

AU - Nilsson, Björn Stefan

AU - Petersen, Troels Christian

AU - Xella, Stefania

AU - Løvschall-Jensen, Ask Emil

PY - 2012/5/15

Y1 - 2012/5/15

N2 - A measurement of the production cross-section for top quark pairs (tt-) in pp collisions at s=7TeV 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 -1 , 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 σtt-=187±11(stat.)-17+18(syst.)±6(lumi.)pb and σtt-=173±17(stat.)-16+18(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.

AB - A measurement of the production cross-section for top quark pairs (tt-) in pp collisions at s=7TeV 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 -1 , 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 σtt-=187±11(stat.)-17+18(syst.)±6(lumi.)pb and σtt-=173±17(stat.)-16+18(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.

U2 - 10.1016/j.physletb.2012.03.083

DO - 10.1016/j.physletb.2012.03.083

M3 - Journal article

SN - 0370-2693

VL - 711

SP - 244

EP - 263

JO - Physics Letters B

JF - Physics Letters B

IS - 3-4

ER -

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

Abstract

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