Measurement of the charge asymmetry in dileptonic decays of top quark pairs in pp collisions at root s=7 TeV using the ATLAS detector
Number of Authors: 2884
2015 (English)In: Journal of High Energy Physics (JHEP), ISSN 1029-8479, E-ISSN 1126-6708, no 5, 061Article in journal (Refereed) Published
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: A C ℓℓ based on the identified charged leptons, and A tt ¯ C , based on the reconstructed tt final state. The asymmetries are measured to beA ℓℓ C =0.024±0.015(stat.)±0.009(syst.), A tt ¯ C =0.021±0.025(stat.)±0.017(syst.).
The measured values are in agreement with the Standard Model predictions.
Place, publisher, year, edition, pages
Springer-Verlag New York, 2015. no 5, 061
Hadron-Hadron Scattering, Top physics
IdentifiersURN: urn:nbn:se:kth:diva-171205DOI: 10.1007/JHEP05(2015)061ISI: 000356951100004ScopusID: 2-s2.0-84929461885OAI: oai:DiVA.org:kth-171205DiVA: diva2:842557
Qc 201507212015-07-212015-07-212015-07-21Bibliographically approved