$Z\rightarrow \tau \tau$ differential cross-section and forward-backward asymmetry in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector.

Padovano G., Morodei F., Bauce M., Corradi M., Giagu S.
  Lunedì 12/09   14:00 - 19:00   Aula B - Maria Goeppert-Mayer   I - Fisica nucleare e subnucleare   Presentazione
Interest has been raised in recent years in precision measurements involving tau leptons, which allow extensive testing of the Standard Model and measurement of its fundamental parameters. In this contribution the prospects for a measurement of $Z\rightarrow \tau \tau$ multi-differential cross-section and of its forward-backward asymmetry, with the ATLAS experiment at LHC, are presented. Details on the analysis strategy are given, including background rejection, trigger acceptances, unfolding of the kinematic distributions, both in fully hadronic and semi-leptonic di-tau final states. Tau lepton identification and reconstruction techniques will also be briefly discussed, with particular focus on hadronic tau decays.