61. Measurement of the W boson mass at CMS

19 May 2026, 16:30
1m
Patio and Auditorium Hall (CICSU)

Patio and Auditorium Hall

CICSU

Centre de conférences internationales - Sorbonne Université 4 Place Jussieu, 75005 Paris

Speaker

Ruben Forti (Universita & INFN Pisa (IT))

Description

This poster presents the measurement of the W boson mass (mW) at the CMS experiment, published in 2024 and representing the most precise determination at the LHC, with an uncertainty of 9.9 MeV. The poster covers some of the most important aspects of the analysis, with a particular focus on the detailed measurement of the muon efficiency scale factors, which play a fundamental role in ensuring good agreement between data and simulation before performing the final fit to mW.

Track Electroweak Physics

Author

Ruben Forti (Universita & INFN Pisa (IT))

Presentation materials