Measurement of the W-boson mass.


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Authors
Abe, F 
Amidei, D 
Apollinari, G 
Atac, M 
Auchincloss, P 
Abstract

The W boson mass is measured using proton-proton collision data at s=13 TeV corresponding to an integrated luminosity of 1.7 fb−1 recorded during 2016 by the LHCb experiment. With a simultaneous fit of the muon q/pT distribution of a sample of Wμν decays and the ϕ distribution of a sample of Zμμ decays the W boson mass is determined to be \begin{equation*} m_{W} = 80354 \pm 23_{\rm stat} \pm 10_{\rm exp} \pm 17_{\rm theory} \pm 9_{\rm PDF}~\mathrm{MeV}, \end{equation*} where uncertainties correspond to contributions from statistical, experimental systematic, theoretical and parton distribution function sources. This is an average of results based on three recent global parton distribution function sets. The measurement agrees well with the prediction of the global electroweak fit and with previous measurements.

Description
Keywords
hep-ex, hep-ex
Journal Title
Phys Rev Lett
Conference Name
Journal ISSN
0031-9007
1079-7114
Volume Title
2022
Publisher
American Physical Society (APS)