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Direct Measurement of the W Boson Width
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2009 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 103, no 23, 231802- p.Article in journal (Refereed) Published
Abstract [en]

We present a direct measurement of the width of the W boson using the shape of the transverse mass distribution of W -> e nu candidate events. Data from approximately 1 fb(-1) of integrated luminosity recorded at s=1.96 TeV by the D0 detector at the Fermilab Tevatron pp collider are analyzed. We use the same methods and data sample that were used for our recently published W boson mass measurement, except for the modeling of the recoil, which is done with a new method based on a recoil library. Our result, 2.028 +/- 0.072 GeV, is in agreement with the predictions of the standard model.

Place, publisher, year, edition, pages
2009. Vol. 103, no 23, 231802- p.
National Category
Physical Sciences
URN: urn:nbn:se:uu:diva-127376DOI: 10.1103/PhysRevLett.103.231802ISI: 000272460200013OAI: oai:DiVA.org:uu-127376DiVA: diva2:329725
Available from: 2010-07-13 Created: 2010-07-13 Last updated: 2011-01-03Bibliographically approved

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Uppsala UniversityDepartment of Physics and Astronomy
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