Publication: Direct measurement of the W boson width
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Abstract
We present a direct measurement of the width of the W boson using the shape of the transverse mass distribution of W→eν candidate events. Data from approximately 1fb-1 of integrated luminosity recorded at s=1.96TeV by the D0 detector at the Fermilab Tevatron pp̄ 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±0.072GeV, is in agreement with the predictions of the standard model. © 2009 The American Physical Society.
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Physical Review Letters, v. 103, n. 23, 2009.
