ATLAS Higgs Physics Prospects at the High Luminosity LHC

A highly successful LHC Run 1 for ATLAS Higgs physics brought not only the discovery of a new particle but also provided initial measurements of its properties. To fully verify the Standard Model nature of the Higgs boson, or measure potential beyond the SM properties in the Higgs sector, will require a vastly larger dataset, delivered by the High Luminosity LHC. This document outlines studies on simulated data into the prospects of future measurements on Higgs couplings, Higgs self-couplings and constraints on discovering a high mass Higgs boson at the HL-LHC.