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Search for heavy particles decaying into top-quark pairs using lepton-plus-jets events in proton-proton collisions at root s=13 TeV with the ATLAS detector

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Figure

Fig. 1 Leading-order Feynman diagrams for the signal processes studied in this search
Fig. 2 Acceptance times efficiency (A × ϵ), including the branchingratio for MC simulated BSM particles decaying into t ¯t, as a function ofthe t ¯t invariant mass mt ¯t (computed before parton radiation) for simu-
Fig. 3 Reconstructed top-quark pairs invariant mass, mrecot ¯t, for simu-lated signal events satisfying the selection criteria
Table 1 The systematicuncertainties in the yields in thebackground, as well as in the 2and 3 TeV Z′TC2 signal models,in percentages
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