Measurement of the $\tau$ lepton polarization in Z boson decays in proton-proton collisions at $\sqrt{s}$ = 13 TeV

CMS Collaboration

The polarization of $\tau$ leptons is measured using leptonic and hadronic $\tau$ lepton decays in Z $\to$ ${\tau }^{+}{\tau }^{-}$ events in proton-proton collisions at $\sqrt{s}$ = 13 TeV recorded by…