Abstract

The discovery of the Higgs boson particle ignited a new era of exploration in fundamental physics. Recent experimental observations and theoretical advancements indicate the Standard Model description is insufficient, so where is the new physics?

Precision measurements of all Higgs properties are a key way to search for hints of new physics, given its central role in the Standard Model. This talk will review Higgs boson property measurements achieved with the Run 2 dataset recorded by the ATLAS detector between 2015 and 2018.

The five times increase in data since Run 1 has provided access to rarer processes, as well as the measurement of previously unexplored kinematic regions. If new physics is present at higher energies than currently accessible with the LHC , slight deviations in the measured cross-sections could already appear in the high-pT region. Cross-section measurements in this regime have been undertaken and will also be presented in this talk.