2002/04/10 by The D0 Collaboration, B. Abbott, V. M. Abazov +98 · 2 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle Detector Development and Performance #Particle physics theoretical and experimental studies #hep-ex
paper · pdf · doi:10.1103/physrevd.66.012001
published as Phys.Rev.D66:012001,2002 · submitted to Phys. Rev. D; 20 pages, 18 figures, 9 tables
arxiv created 2002/04/10 · openalex publication_date 2002/07/02 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/04
We have measured the W boson mass using the D\O detector and a data sample of 82 pb^\ensuremath-1 from the Fermilab Tevatron collider. This measurement uses \stackrel\ensuremath→We\ensuremathν 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 D\O 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 D\O W boson mass measurements, we obtain MW=80.483\ifmmode±\else\textpm\fi0.084 GeV. The 8% improvement from the previous D\O 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.