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cross-section INT notes
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1. Measurement of the $t\bar{t}$ production cross-section in $pp$ collisions at $\sqrt{s}=$7-8 TeV using $e\mu$ events with $b$-tagged jets / Hawkings, R
This note describes measurements of the inclusive $t\bar{t}$ production cross-section $\sigma_{t\bar{t}}$ with the complete 2011-2012 ATLAS data sample of 4.59 fb$^{-1}$ of $pp$ collision data at $\sqrt{s}=7$ TeV and 20.3 fb$^{-1}$ at $\sqrt{s}=8$ TeV using dilepton $t\bar{t}$ events with an opposite-sign $e\mu$ pair in the final state. Jets containing $b$ quarks were tagged using the MV1 tagging algorithm exploiting the long lifetime, high decay multiplicity and high mass of $b$ hadrons. [...]
ATL-COM-PHYS-2014-017.- Geneva : CERN, 2014
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2. Reference $t\bar{t}$ production cross sections for use in ATLAS analyses / Ferrando, J; Wendland, D; Giuli, Francesco (CERN)
Reference cross sections for inclusive $t\bar{t}$ production in ATLAS analyses are presented. The references are given as a function of top mass and centre-of-mass energy. [...]
ATL-COM-PHYS-2014-112.- Geneva : CERN, 2014
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3. Measurements of the top pair production cross-section in 8 TeV proton-proton collisions using kinematic information : Top cross-section measurement in lepton + jets channels using 8TeV data / Abi, B (Oklahoma State University); Khanov, A (Oklahoma State University); Rizatdinova, F (Oklahoma State University); Saleem, M (University of Oklahoma)
This note presents the measurement of the $t\bar{t}$ inclusive production cross-section in pp collisions at a centre-of-mass energy $\sqrt s=8$ TeV using data collected by the ATLAS detector at the CERN Large Hadron Collider. The measurement has been done in a data set corresponding to an integrated luminosity of 20.3 fb$^{-1}$ in the lepton+jets final state. [...]
ATL-COM-PHYS-2013-522.- Geneva : CERN, 2013
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4. Measurement of the $t\bar{t}b\bar{b}$ production cross-section using a cut-and-count method with 8 TeV ATLAS data / Argyropoulos, S; Asbah, N; Grohsjean, A; Keller, John Stakely (DESY, Hamburg and Zeuthen); Katzy, Judith (DESY, Hamburg and Zeuthen)
This note describes the measurement of the $t\bar{t}b\bar{b}$ production cross-section $\sigma_{t\bar{t}b\bar{b}}$ using the complete 2012 dataset of 20.3 fb$^{-1}$ of $pp$ collision data collected with the ATLAS detector at $\sqrt{s}=$8 TeV. The measurement is based on a cut-and-count method, exploiting the most precise jet energy scale and $b$-tagging calibrations and is performed in a fiducial volume using dilepton final states. [...]
ATL-COM-PHYS-2014-637.- Geneva : CERN, 2014 - 22 p.
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5. Measurement of the top-antitop pair differential fiducial cross-section as a function of the top quark $p_{T}$ in the boosted topology / Arguin, Jean-Francois (Group of Particle Physics, University of Montreal); Berta, Peter (Charles University in Prague, Faculty of Mathematics and Physics); Calvet, Samuel (Laboratoire de Physique Corpusculaire (LPC), Clermont Universite, Universite Blaise Pascal, CNRS/IN2P3, Clermont-Ferrand, France); Fabbri, Federica (INFN Bologna and Universita' di Bologna, Dipartimento di Fisica e Astronomia); Ferreira de Lima, Danilo Enoque (University of Glasgow, SUPA - School of Physics and Astronomy); Franchini, Matteo (INFN Bologna and Universita' di Bologna, Dipartimento di Fisica e Astronomia); Gabizon, Ofir (Bergische Universitaet (Wuppertal), Fachbereich Mathematik und Naturwissenschaften); Heck, Tobias (Institut fuer Physik, Universitaet Mainz); Kvita, Jiri (Palacky University, RCPTM); Leitner, Rupert (Charles University in Prague, Faculty of Mathematics and Physics) et al.
The differential cross-section for boosted top quark pair production is measured in 20.3~\ifb\ of proton-proton collisions at a center-of-mass energy of 8 TeV. The measurement is performed for $t\bar{t}$ events in the lepton+jets channel, where the hadronically decaying top quark has a transverse momentum above 300 GeV. [...]
ATL-COM-PHYS-2013-1093.- Geneva : CERN, 2013 - 28 p.
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6. Measurement of the inclusive tt ̄ cross section in pp collisions at √s =8 TeV with ATLAS using the hadronic decays of the top quark pairs / Lefebvre, G (LPNHE-Paris,France); Malaescu, B (LPNHE-Paris,France); Ridel, M (LPNHE-Paris,France); Trincaz-Duvoid, S (LPNHE-Paris,France); Varouchas, D (LPNHE-Paris,France)
This note describes a measurement of the inclusive tt ̄ production cross√section σtt ̄ with the 2012 ATLAS data sample of 20.3 fb−1at the centre-of-mass energy of s =8 TeV using fully hadronic tt ̄ events. The cross-section was measured to be σtt ̄ = 208 ± 8 (stat) ± 56 (syst) ± 6 (lumi), in agreement with the theoretical predictions at NNLO+NNLL..
ATL-COM-PHYS-2014-783.- Geneva : CERN, 2014
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7. Measurement of top quark pair differential cross sections in the di-lepton channel with ATLAS in $pp$ collisions at $\sqrt{s}$ = 7 TeV / Errede, S M (Department of Physics, University of Illinois, Urbana-Champaign, United States of America); Lie, K (Department of Physics, University of Illinois, Urbana-Champaign, United States of America); Vichou, I (Department of Physics, University of Illinois, Urbana-Champaign, United States of America)
This note documents measurements of differential cross sections of top quark pair ($t\bar t$) production as a function of the mass, the transverse momentum and the rapidity of the $t\bar t$ system using $\sqrt{s}$ = 7TeV proton-proton collision data corresponding to an integrated luminosity of \lumitot collected by the ATLAS detector at the Large Hadron Collider. Events with top quark pair signatures are selected in the dilepton channel [...]
ATL-COM-PHYS-2013-1567.- Geneva : CERN, 2013
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8. Measurement of ttb cross section in the lepton plus jets channel using a fit to the MV1c distribution / Danninger, M; Lister, A; vanRossem, M
A fiducial measurement of the cross-section for the production of $t\bar{t}$ events with exactly 1 lepton and at least five jets, at least three of which have to contain a $B$-hadron is presented, referred to as $t\bar{t}$+$b$ events. Events with one lepton and five or more jets, two or more of them passing the b-jet identification criteria are selected from 20.3 fb$^{-1}$ of $pp$ collision data at $\sqrt{s} = 8$ TeV are used, collected with the ATLAS detector at the Large Hadron Collider. [...]
ATL-COM-PHYS-2014-939.- Geneva : CERN, 2104
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9. Combination of ATLAS and CMS top quark pair cross section measurements in the $e\mu$ final state using proton-proton collisions at $\sqrt{s}$ = 8 TeV / Aldaya, M; Shabalina, E
A combination of top-quark pair production cross-section ($\sigma_{\rm t\bar t}$) measurements at a centre-of-mass energy of 8 TeV performed by the ATLAS and CMS experiments at the LHC in the di-lepton channels is presented. The $\sigma_{\rm t\bar t}$ measurements use between 5.3 and 20.3 fb$^{-1}$ of proton-proton collisions. [...]
ATLAS-COM-CONF-2014-063.- Geneva : CERN, 2014 - 8 p.
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