Global fits to precision electroweak data are sensitive to physics beyond the Standard Model but this sensitivity is currently limited by the precision with which the W mass has been directly measured. The most precise measurements of the W mass have been at hadron collider experiments using the kinematic distributions in leptonic W decays. I present the first measurement of the W mass with the LHCb experiment, which is a single-arm small-angle spectrometer experiment at the LHC. I will start with an introduction to the standard model and the precision electroweak observables before describing the challenges in measuring the W mass and the solutions used in LHCb’s measurement. This measurement is based on a subset of the existing LHCb data and I will present an outlook for a more precise measurement with the full dataset, and future combinations with the other LHC experiments.

Per partecipare su Zoom, collegarsi al meeting
Topic: Theory and Pheno seminars
https://infn-it.zoom.us/j/8573185271
Meeting ID: 857 318 5271