Search for High-Mass Resonances Decaying to $\tau \nu $ in $pp$ Collisions at $\sqrt{s}=13\text{}\text{}\mathrm{TeV}$ with the ATLAS Detector

A search for high-mass resonances decaying to $\tau \nu $ using proton-proton collisions at $\sqrt{s}=13\text{}\text{}\mathrm{TeV}$ produced by the Large Hadron Collider is presented. Only $\tau $-lepton decays with hadrons in the final state are considered. The data were recorded with the ATLAS detector and correspond to an integrated luminosity of $36.1\text{}\text{}{\mathrm{fb}}^{-1}$. No statistically significant excess above the standard model expectation is observed; model-independent upper limits are set on the visible $\tau \nu $ production cross section. Heavy ${W}^{\prime }$ bosons with masses less than 3.7 TeV in the sequential standard model and masses less than 2.2–3.8 TeV depending on the coupling in the nonuniversal $G\left(221\right)$ model are excluded at the 95% credibility level.