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Direct Measurement of the W Boson Width
Baringer, Philip S. Bean, Alice Clutter, Justace Randall McGivern, Carrie Lynne Moulik, Tania Wilson, Graham Wallace Abazov, V. M. Abbott, B. Abolins, M. Acharya, B. S.
Baringer, Philip S.
Bean, Alice
Clutter, Justace Randall
McGivern, Carrie Lynne
Moulik, Tania
Wilson, Graham Wallace
Abazov, V. M.
Abbott, B.
Abolins, M.
Acharya, B. S.
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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 1 fb(−1) of integrated luminosity recorded at s√=1.96 TeV by the D0 detector at the Fermilab Tevatron pp-bar 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.
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This is the publisher's version, also available electronically from http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.103.231802.
Date
2009-12-04
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American Physical Society
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Baringer_12-4-2009.pdf
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V. M. Abazov et al. (D0 Collaboration). (2009). "Direct Measurement of the W Boson Width." Physical Review Letters, 103(23):231802. http://dx.doi.org/10.1103/PhysRevLett.103.231802.