The DZero collaboration has reported the most precise measurement of the W-boson mass. This should have wide-ranging ramifications, including putting more constraints on the Higgs mass.
The CDF collaboration recently measured the W boson mass to be 80387 +/- 19 MeV/c2. The DZero collaboration measured the particle’s mass to be 80375 +-23 MeV/c2. The two new measurements, along with the addition of previous data from the earliest operation of the Tevatron, combine to produce a measurement of 80387 +- 17 MeV/c2, which has a precision of 0.02 percent.
I'm sure there will be more to come out of the retired "old lady".
Zz.
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