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Type: Journal article
Title: Measurement of the charge asymmetry in dileptonic decays of top quark pairs in pp collisions at √s = 7 TeV using the ATLAS detector
Other Titles: Measurement of the charge asymmetry in dileptonic decays of top quark pairs in pp collisions at root s = 7 TeV using the ATLAS detector
Author: Aad, G.
Abbott, B.
Abdallah, J.
Abdel Khalek, S.
Abdinov, O.
Aben, R.
Abi, B.
Abolins, M.
AbouZeid, O.
Abramowicz, H.
Abreu, H.
Abreu, R.
Abulaiti, Y.
Acharya, B.
Adamczyk, L.
Adams, D.
Adelman, J.
Adomeit, S.
Adye, T.
Agatonovic-Jovin, T.
et al.
Citation: Journal of High Energy Physics, 2015; 2015(5)
Publisher: Springer
Issue Date: 2015
ISSN: 1126-6708
Statement of
G. Aad … P. Jackson … L. Lee … A. Petridis … N. Soni ... M. White ... et al. (The ATLAS Collaboration)
Abstract: A measurement of the top-antitop (tt¯) charge asymmetry is presented using data corresponding to an integrated luminosity of 4.6 fb−1 of LHC pp collisions at a centreof-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: ACℓℓ based on the identified charged leptons, and Att¯C, based on the reconstructed tt final state. The asymmetries are measured to be. AℓℓC=0.024±0.015(stat.)±0.009(syst.), Att¯C=0.021±0.025(stat.)±0.017(syst.). The measured values are in agreement with the Standard Model predictions.
Keywords: Hadron-Hadron scattering; top physics
Rights: © The Author(s) 2015. Open Access, Copyright CERN, for the benefit of the ATLAS Collaboration. Article funded by SCOAP3.
RMID: 0030029571
DOI: 10.1007/JHEP05(2015)061
Appears in Collections:Physics publications

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