Speaker
Mr
Harry Lyons
(DESY)
Description
Abstract: Theoretical predictions of the W-boson mass via the electroweak fit are now more precise than any experimental measurement. The recent measurement by the ATLAS collaboration suffered from large uncertainties from pT(W) modelling and pileup. In 2017 and 2018 ATLAS ran under special low pileup (“low-mu”) conditions at 13TeV and 5TeV, providing respectively 339pb^-1 and 256pb^-1 of data which will be valuable for precision W physics. This talk presents the efforts and preliminary results in using this low-mu data to measure pT(W) with %-level precision, and prospects towards its use in a future W-boson mass measurement.
