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Collider experiment reveals a W boson mass of 80.375 GeV from Tevatron proton-antiproton collisions, suggesting tight constraints on Standard Model predictions.
We present a measurement of the W boson mass using data corresponding to 4.3 fb^-1 of integrated luminosity collected with the D0 detector during Run II at the Fermilab Tevatron pp̄ collider. With a sample of 1 677 394 W→eν candidate events, we measure MW=80.367±0.026 GeV. This result is combined with an earlier D0 result determined using an independent Run II data sample, corresponding to 1 fb^-1 of integrated luminosity, to yield MW=80.375±0.023 GeV.
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Abazov et al. (2012) studied this question.
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