Performance of jet substructure techniques in early $\sqrt{s}=13$ TeV $pp$ collisions with the ATLAS detector

This note provides first studies of large-radius jet properties with the ATLAS detector in $pp$ collisions delivered by the LHC at $\sqrt{s}=13$ TeV. These properties include the jet mass, $N$-subjettiness, splitting scales, and energy correlation functions in addition to other jet substructure related quantities. Multiple large-radius jet types are investigated in 50 pb${}^{-1}$ of recorded data and compared to expected results obtained with simulated multijet events.