Precise Prediction for the W-Boson Mass in the Standard Model

Details Precise Prediction for the W-Boson Mass in the Standard Model Precise Prediction for the W-Boson Mass in the Standard Model

2003-11-11

arxiv.org/abs/hep-ph/0311148v1

Phys.Rev.D69:053006,2004

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 1 figure

Scientific paper

10.1103/PhysRevD.69.053006

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 M_W to better than 0.5 MeV for 10 GeV < M_H < 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 M_W is estimated to be about 4 MeV for M_H < 300 GeV.

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