Matthias Schott - Determination of the W boson mass at the ATLAS experiment

A precise measurement of the mass of the W boson mass represents an important milestone to test the overall consistency of the Standard Model. Since the discovery of a Higgs Boson, the the W boson mass is predicted to 7 MeV precision, while the world average of all measurements is 15 MeV, making the improved measurement an important goal to test new physics models such as supersymmetry.

After 5 years of intense effort, the ATLAS collaboration published its first measurement on the W boson mass beginning of 2017, yielding the world’s most precise value. The measurement strategy as well as the major challenges will be discussed in this talk. The results will be interpreted in terms of the overall consistency of the Standard Modell and an outlook to future measurements will be given.