Research Papers in Physics and Astronomy


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Published by American Physical Society. Phys. Rev. D 66, 032008 (2002). Copyright © 2002 American Physical Society. Used by permission.


Based on 85 pb-1 data of pp̅ collisions at √s = 1.8 TeV collected using the DØ detector at Fermilab during the 1994–1995 run of the Tevatron, we present a direct measurement of the total decay width of the W boson ΓW . The width is determined from the transverse mass spectrum in the W→e+ν decay channel and found to be ΓW=2.23-0.14+0.15 (stat) ±0.10(syst) GeV, consistent with the expectation from the standard model.

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