The measurement of the effective weak mixing angle with the ATLAS experiment at the LHC is presented. It is extracted from the forward--backward asymmetry in the polar angle distribution of the muons originating from $Z$ ...

The search for physics beyond the Standard Model (SM) is a central focus of modern particle physics. Supersymmetric extensions (SUSY) to the SM offer elegant solutions to many unresolved questions of the theory. This thesis ...

Suche nach Squarks und Gluinos in τ-Lepton Endzuständen mit dem ATLAS Experiment
Das erfolgreiche und wohletablierte Standardmodell der Teilchenphysik ist in der Lage, die Mehrheit der beobachteten ...

In this thesis, a search for the H → bb decay of the Standard Model Higgs boson is presented. A dataset of 20.2 fb^-1 recorded by the ATLAS detector at CERN is ......

This thesis presents the first study to find events of the rare tHq process with ATLAS data in channels with hadronically decaying τ. A baseline framework is developed to select as many signal events as possible in ...

A search for Higgs boson pair (HH) production in final states with two b quarks and two τ leptons using 139 fb^-1 of proton–proton collision data at a centre-of-mass energy of 13 TeV recorded ...

In this thesis, a search for the H→b¯b decay mode of the Standard Model Higgs boson in associated production with a vector boson is presented. The search is based on the entire data-set recorded by the ATLAS experiment in ...