Measurement of $H\to\tau\tau$ at $\sqrt{s}=13\,$TeV with the ATLAS Experiment

The $H\to\tau\tau$ process is currently the only observed leptonic decay channel of the Higgs boson at the LHC. The ATLAS experiment performed a cut based analysis in this decay channel on 36.1$\,$fb$^{-1}$ of data collected in 2015 and 2016 at $\sqrt{s}=13\,$TeV, measuring the cross-section times branching ratio for $pp \to H \to \tau\tau$. The process is divided in sub-channels according to the decay of the $\tau$-leptons into lighter leptons or hadrons. The Higgs production cross-sections for the gluon-gluon fusion and vector-boson fusion production modes are extracted from a maximum likelihood fit to data on the distribution of the reconstructed di-$\tau$ invariant mass, $m_{\tau\tau}$. This talk will discuss the recently published ATLAS results with a focus on the di-hadronic sub-channel and give an outlook for the analysis on the full 13$\,$TeV dataset.