# Measurement of the charge asymmetry in dileptonic decays of top quark pairs in pp collisions at s√=7 TeV using the ATLAS detector

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 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: AℓℓC 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. 2015
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Journal articles

http://hal.in2p3.fr/in2p3-01112063
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Submitted on : Monday, February 2, 2015 - 11:21:42 AM
Last modification on : Thursday, December 16, 2021 - 2:11:18 PM

### Citation

G. Aad, S. Abdel Khalek, A. Bassalat, C. Becot, S. Binet, et al.. Measurement of the charge asymmetry in dileptonic decays of top quark pairs in pp collisions at s√=7 TeV using the ATLAS detector. Journal of High Energy Physics, Springer, 2015, 2015 (5), pp.61. ⟨10.1007/JHEP05(2015)061⟩. ⟨in2p3-01112063⟩

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