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Probing top-antitop resonances with $t\bar{t}$ scattering at LHC14
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abstract
We explore the sensitivity of the LHC at 14 TeV centre-of-mass energy (LHC14) to the single production and decay of top-antitop resonances in the four-top final state. We focus on the same-sign dilepton channel, and work within a simplified model with a vector boson coupling to the Standard Model only via its interactions with right-handed top quarks. We find it is possible to discover (exclude) such a vector boson with 300 fb$^{-1}$ of integrated luminosity up to a mass of 1.2 (1.6) TeV for a modest coupling to tops of $g_\rho$=2. We present our results as an exclusion limit on the cross-section$\times$branching ratio for ease of recasting, and interpret them in the context of the gauge-singlet vector boson $\rho_X$ present in many simple Composite Higgs theories.
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Cited by 1 Pith paper
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Search for a top-philic Z' boson decaying into a $\mathrm{t\bar{t}}$ pair in a final state with jets and an electron or muon in proton-proton collisions at $\sqrt{s}$ = 13.6 TeV
CMS sees no evidence for a top-philic Z' boson decaying to top-quark pairs and sets the tightest published cross-section limits for masses between 0.5 and 3 TeV.
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