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|Title:||Measurements of top-quark pair differential cross-sections in the eμ channel in pp collisions at √s = 13 TeV using the ATLAS detector|
|Other Titles:||Measurements of top-quark pair differential cross-sections in the e mu channel in pp collisions at root s = 13 TeV using the ATLAS detector|
|Citation:||European Physical Journal C, 2017; 77(5):292-1-292-30|
|M. Aaboud ... P. Jackson ... L. Lee ... A. Petridis ... M.J. White .. [et al.] (The ATLAS Collaboration)|
|Abstract:||This article presents measurements of tt¯ differential cross-sections in a fiducial phase-space region, using an integrated luminosity of 3.2 fb⁻¹ of proton–proton data at a centre-of-mass energy of s√ = 13 TeV recorded by the ATLAS experiment at the LHC in 2015. Differential cross-sections are measured as a function of the transverse momentum and absolute rapidity of the top quark, and of the transverse momentum, absolute rapidity and invariant mass of the tt¯ system. The tt¯ events are selected by requiring one electron and one muon of opposite electric charge, and at least two jets, one of which must be tagged as containing a b-hadron. The measured differential cross-sections are compared to predictions of next-to-leading order generators matched to parton showers and the measurements are found to be consistent with all models within the experimental uncertainties with the exception of the Powheg-Box + Herwig++ predictions, which differ significantly from the data in both the transverse momentum of the top quark and the mass of the tt¯ system.|
|Rights:||© CERN for the benefit of the ATLAS collaboration 2017. This article is an open access publication|
|Appears in Collections:||Physics publications|
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