QCD and W Mass Determination at LEP

Details QCD and W Mass Determination at LEP QCD and W Mass Determination at LEP

2003-04-23

arxiv.org/abs/hep-ex/0304031v1

Physics

High Energy Physics

High Energy Physics - Experiment

Proceedings of the XXXVIIIth Rencontres de Moriond, 2003, QCD and Hadronic Interactions at High Energy, Ed. J. Tran Thanh Van,

Scientific paper

Measurements of hadronic final state interactions in W-pair events at LEP are presented. In particular, different scenarios of colour reconnection are studied. The data agree with moderate colour reconnection effects. Extreme scenarios are ruled out, limiting the systematic uncertainty on the LEP W mass determination due to this effect. An updated measurement of the mass of the W boson at LEP yields 80.412 +/- 0.042 GeV.

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