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A future proton-proton collider with center of mass energy around 100 TeVwill have a remarkable capacity to discover massive new particles and continueexploring weak scale naturalness. In this work we will study its sensitivity totwo stop simplified models as further examples of its potential power: pairproduction of stops that decay to tops or bottoms and higgsinos; and stops thatare either pair produced or produced together with a gluino and then cascadedown through gluinos to the lightest superpartner (LSP). In both simplifiedmodels, super-boosted tops or bottoms with transverse momentum of order TeVwill be produced abundantly and call for new strategies to identify them. Wewill apply a set of simple jet observables, including track-based jet mass,N-subjettiness and mass drop, to tag the boosted hadronic or leptonic decayingobjects and suppress the Standard Model as well as possible SUSY backgrounds.Assuming 10% systematic uncertainties, the future 100 TeV collider can discover(exclude) stops with masses up to 6 (7) TeV with 3 inverse attobarns ofintegrated luminosity if the stops decay to higgsinos. If the stops decaythrough gluinos to LSPs, due to additional SUSY backgrounds from gluino pairproduction, a higher luminosity of about 30 inverse attobarns is needed todiscover stops up to 6 TeV. We will also discuss how to use jet observables todistinguish simplified models with different types of LSPs. The boosted top orbottom tagging strategies developed in this paper could also be used in othersearches at a 100 TeV collider. For example, the strategy could help discovergluino pair production with gluino mass close to 11 TeV with 3 inverseattobarns of integrated luminosity.

Jet observables and stops at 100 TeV collider