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Article
Report number arXiv:1501.07383 ; CERN-PH-EP-2014-233 ; CERN-PH-EP-2014-233
Title Measurement of the charge asymmetry in dileptonic decays of top quark pairs in pp collisions at s=7 TeV using the ATLAS detector
Related titleMeasurement of the charge asymmetry in dileptonic decays of top quark pairs in pp collisions at s=7 TeV using the ATLAS detector
Author(s) ATLAS Collaboration  Zeige alle 2884 Autoren
Publication 2015-05-12
Imprint 29 Jan 2015
Number of pages 56
Note Comments: 33 pages plus author list + cover pages (56 pages total), 8 figures, 11 tables, submitted to JHEP, all figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2013-09/
33 pages plus author list + cover pages (57 pages total), 8 figures, 11 tables, published version, all figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2013-09/
In: JHEP 05 (2015) 061
DOI 10.1007/JHEP05(2015)061
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; ATLAS
Free keywords flavor physics ; top physics ; experimental results
Abstract A measurement of the top--antitop (tt¯) charge asymmetry is presented using data corresponding to an integrated luminosity of 4.6 fb1 of LHC pp collisions at a centre-of-mass energy of 7 TeV collected by the ATLAS detector. Events with two charged leptons, at least two jets and large missing transverse momentum are selected. Two observables are studied: AC based on the identified charged leptons, and ACtt¯, based on the reconstructed tt¯ final state. The asymmetries are measured to be AC=0.024±0.015(stat.)±0.009(syst.), ACtt¯=0.021±0.025(stat.)±0.017(syst.). The measured values are in agreement with the Standard Model predictions.
Copyright/License preprint: © 2014-2024 CERN (License: CC-BY-3.0)
publication: © 2015-2024 CERN (License: CC-BY-4.0), sponsored by SCOAP³



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Email contact: a_ciocio@lbl.gov


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