Improved W boson mass measurement with the DØ detector

View/ Open
Issue Date
2002-07-02Author
Baringer, Philip S.
Bean, Alice
Coppage, Don
Hebert, C.
Publisher
American Physical Society
Type
Article
Article Version
Scholarly/refereed, publisher version
Metadata
Show full item recordAbstract
We have measured the W boson mass using the DØ detector and a data sample of 82 pb(-1) from the Fermilab Tevatron collider. This measurement uses W⃗ eν decays, where the electron is close to a boundary of a central electromagnetic calorimeter module. Such “edge” electrons have not been used in any previous DØ analysis, and represent a 14% increase in the W boson sample size. For these electrons, new response and resolution parameters are determined, and revised backgrounds and underlying event energy flow measurements are made. When the current measurement is combined with previous DØ W boson mass measurements, we obtain MW=80.483±0.084 GeV. The 8% improvement from the previous DØ measurement is primarily due to the improved determination of the response parameters for non-edge electrons using the sample of Z bosons with non-edge and edge electrons.
Description
This is the publisher's version, also available electronically from http://journals.aps.org/prd/abstract/10.1103/PhysRevD.66.012001.
ISSN
1550-7998Collections
Citation
V. M. Abazov et al. ((DØ Collaboration)). (2002). "Improved W boson mass measurement with the DØ detector." Physical Review D, 66(1):012001. http://dx.doi.org/10.1103/PhysRevD.66.012001
Items in KU ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
We want to hear from you! Please share your stories about how Open Access to this item benefits YOU.