The latest W boson mass measurement from CMS at the LHC using data up to 13 TeV from the year 2016 is that "m(W) = 80360.2 ± 9.9 MeV, in agreement with the standard model prediction." The Standard Model electroweak fit value is 80353 ± 6 MeV.
All recent measurements except a 2022 reanalysis of data from the CDF experiment at the Tevatron experiment are consistent with this value, and this CDF outlier is widely believed to be flawed and incorrect.
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