Search for top-squark pair production in final states with two tau leptons, jets, and missing transverse momentum in $\sqrt{s}=13$ TeV pp-collisions with the ATLAS detector

A search for direct top-squark pair production in final states with two tau leptons, jets, and missing transverse momentum is presented. The analysis uses a dataset of proton$-$proton collisions with an integrated luminosity of $13.2~\text{fb}^{-1}$, recorded with the ATLAS detector at the Large Hadron Collider at a centre-of-mass energy of $\sqrt{s} = 13~\text{TeV}$. No significant deviation from the Standard Model expectation is observed in the data. The results are interpreted using simplified models, and exclusion limits at $95\,\\%$ confidence level on the sparticle masses are derived. Masses of the top squark up to 870 GeV and of the tau slepton up to 730 GeV are excluded.