Martedì 7 marzo 2023
ore 15:00
Sala 131 e on line su piattaforma ZOOM
Abstract:
We present the status of the determination of the W boson mass at hadron colliders, discussing the main sources of uncertainty, in a theory perspective, reviewing the results from the Tevatron and LHC experiments. We then introduce a new observable, arXiv:2301.04059 , sensitive to the W boson mass, whose features are particularly suitable for a systematic discussion of the different uncertainties affecting the MW determination.
We demonstrate that one of the most problematic elements in the modelling of the kinematical distributions, namely the perturbative QCD corrections, is under control, with a residual uncertainty at the +-5 MeV level.