July 2003
Using data taken during Run II of the Fermilab Tevatron, the CDF and DØ collaborations have measured the ratio of production cross sections times branching ratios
The combined value from the Run II data is 
Using the relation
and input from LEP and theory gives an indirect measurement of the W branching
fraction to leptons of 
and
of the W width of 
GeV.
When combined with similar measurements from Run I of the Tevatron, the result
for the branching fraction is 
and
for the width is 
Please see our note for the details of the analysis.
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click here for an eps file for the width figure.
click here for an eps file of the branching fraction figure.