Kuday, SinanYıldız (Duran), HaticeÇiftçi, RenaÇiftçi, Abbas KenanÇakır, Orhan2020-03-152020-03-152012https://doi.org/10.1016/j.physletb.2012.09.032http://hdl.handle.net/20.500.12575/70604A measurement of the cross section of top quark pair production in proton–proton collisions recorded with the ATLAS detector at the Large Hadron Collider at a centre-of-mass energy of 7 TeV is reported. The data sample used corresponds to an integrated luminosity of 2.05 fb−1. Events with an isolated electron or muon and a τ lepton decaying hadronically are used. In addition, a large missing transverse momentum and two or more energetic jets are required. At least one of the jets must be identified as originating from a b quark. The measured cross section, σtt¯=186±13(stat)±20(syst.)±7(lumi.) pb, is in good agreement with the Standard Model prediction. © 2012 CERNenArticle7171-3891080370-2693