| Resumen |
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. |
