English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Previous studies of the QED systematic uncertainties on the LEP measurementof the W-boson mass have used idealized event selections and fittingprocedures. In this paper, the Monte Carlo tandem of KoralW and YFSWW is usedto investigate how the full experimental mass extraction procedure affectsthese estimates. It is found that the kinematic fitting used in theexperimental determination of the W-boson mass enhances the sensitivity to QEDcorrections involving real photon production. It is concluded that the previousestimates of the QED theoretical uncertainty on the LEP2 W-mass measurement maybe too small. A simple procedure for approximating the effect of the kinematicfit at the level of the generated four fermions is proposed. This procedurewould allow previous theoretical studies to be repeated using a much closerapproximation of the real experimental mass extraction method. Finally, thepossibility of setting experimental limits on O(alpha) theoreticaluncertainties using identified e+e- -> W+W-gamma events is discussed.Comment: 9 pages, 2 postscript figure

The influence of the experimental methodology on the QED theoretical uncertainties on the measurement ofMWat LEP

The influence of the experimental methodology on the QED theoretical uncertainties on the measurement ofM_Wat LEP