Measurement of Jet Shapes in Top Pair Events at √s = 7 TeV Using the ATLAS Detector

ATLAS Collaboration. 2013. “Measurement of Jet Shapes in Top Pair Events at √s = 7 TeV Using the ATLAS Detector.” The European Physical Journal C 73 (12) (December). doi:10.1140/epjc/s10052-013-2676-3.

Abstract

A measurement of jet shapes in top-quark pair events using 1.8 fb(-1) of √s = 7 TeV pp collision data recorded by the ATLAS detector at the LHC is presented. Samples of top-quark pair events are selected in both the single-lepton and dilepton final states. The differential and integrated shapes of the jets initiated by bottom-quarks from the top-quark decays are compared with those of the jets originated by light-quarks from the hadronic W-boson decays in the single-lepton channel. The light-quark jets are found to have a narrower distribution of the momentum flow inside the jet area than b-quark jets.

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