Michaela Queitsch-Maitland (DESY) Title: "Precision measurements of Higgs boson production and the search for dark matter in ttbar events at the LHC"

Abstract:
“Despite the huge success of the Standard Model (SM), there is overwhelming evidence for physics beyond the SM and many remaining questions, such as the nature of dark matter (DM). The current leading candidate for DM are Weakly Interacting Massive Particles (WIMPs), which could be produced directly at colliders.
In this talk I will discuss complimentary methods for exploring new phenomena at the LHC with the ATLAS experiment. Firstly, through precision measurements of the Higgs boson properties, and secondly though the production of missing transverse energy in association with pairs of top quarks.
Finally, I will discuss the High Luminosity LHC (HL-LHC) project and the ATLAS inner tracker (ITk) upgrade, focusing on characterising the end-of-lifetime performance and validations of material budget estimates.”