Speaker
Description
We present the most recent results on searches for new massive resonances decaying to a top-antitop quark pair with the CMS detector at the LHC.
Searches are performed by measuring the invariant mass distribution of the ttbar system, both in semileptonic and fully-hadronic final states, using the data collected by the CMS experiment in pp collisions at sqrt(s)=13 TeV in 2015, the first year of the LHC Run-2.
In order to maximize the analysis sensitivity for BSM resonances with a mass above the TeV scale, dedicated techniques are used to identify the decay of highly-boosted top quarks: these methods include the identification of poorly isolated prompt leptons overlapping with a b-jet and the use of a top-tagging algorithm to reconstruct fully-merged jets with substructure properties.
No significant excess is observed in the data compared to the expected SM background and exclusion limits are set on the cross section of a ttbar resonance in different BSM scenarios. Finally, we discuss how these first results with 13 TeV data complement and possibly improve the exclusion limits for resonant ttbar production set in Run-1.
Summary
We present the most recent results on searches for new massive resonances decaying to a top-antitop quark pair with data collected by the CMS experiment at the LHC in Run-2.
