W Mass at LEP and Standard Model Fits

Details W Mass at LEP and Standard Model Fits W Mass at LEP and Standard Model Fits

2006-05-05

arxiv.org/abs/hep-ex/0605014v2

Physics

High Energy Physics

High Energy Physics - Experiment

Proceedings of the XLIst Recontres de Moriond, La Thuile, March 2006

Scientific paper

The W-mass measurements from LEP and the results of a global fit of the Standard Model parameters to the electroweak data are presented. Comprehensive studies of experimental systematic effects allowed a measurement of the W mass with an accuracy of better than half a permill. Especially the recent improvements in the LEP energy calibration, the modelling of the hadronisation process and the understanding of Bose-Einstein correlations and colour reconnection effects are discussed. The fit of the Standard Model parameters to all electroweak measurements verifies the self-consistency of the theory. The combination of all electroweak data yield information on the mass of the still undiscovered Higgs boson, $m_H$.

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