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We perform a model-independent study for top-antitop and top-top resonancesin the dilepton channel at the Large Hadtron Collider. In this channel, we cansolve the kinematic system to obtain the momenta of all particles including thetwo neutrinos, and hence the resonance mass and spin. For discoveringtop-antitop resonances, the dilepton channel is competitive to the semileptonicchannel because of the good resolution of lepton momentum measurement and smallstandard model backgrounds. Moreover, the charges of the two leptons can beidentified, which makes the dilepton channel advantageous for discoveringtop-top resonances and for distinguishing resonance spins. We discuss andprovide resolutions for difficulties associated with heavy resonances andhighly boosted top quarks.

Top-antitop and Top-top Resonances in the Dilepton Channel at the CERN LHC