Precise Prediction for the W-Boson Mass in the Standard Model
M. Awramik, M. Czakon, A. Freitas, G. Weiglein
Abstract
The presently most accurate prediction for the W-boson mass in the Standard Model is obtained by combining the complete two-loop result with the known higher-order QCD and electroweak corrections. The numerical impact of the different contributions is analysed in detail. A simple parametrisation of the full result is presented, which approximates the full result for MW to better than 0.5 MeV for 10 GeV < MH < 1 TeV if the other parameters are varied within their combined 2 sigma region around their experimental central values. The different sources of remaining theoretical uncertainties are investigated. Their effect on the prediction of MW is estimated to be about 4 MeV for MH < 300 GeV.
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