Measurement of jet shapes in top-quark pair events at √ s = 7 TeV using the ATLAS detector

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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 W → qq′ 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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Aad, G., Abajyan, T., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdelalim, A. A., … Zwalinski, L. (2013). Measurement of jet shapes in top-quark pair events at √ s = 7 TeV using the ATLAS detector. European Physical Journal C, 73(12). https://doi.org/10.1140/epjc/s10052-013-2676-3

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