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Direct measurement of the W boson width in p(p)over-bar collisions at root s=1.8 TeV

Affolder, T; Akimoto, H; Akopian, A; Albrow, MG; Amaral, P; Amendolia, SR; Amidei, D; ... Zucchelli, S; + view all (2000) Direct measurement of the W boson width in p(p)over-bar collisions at root s=1.8 TeV. PHYS REV LETT , 85 (16) 3347 - 3352. 10.1103/PhysRevLett.85.3347. Green open access

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Abstract

This Letter describes a direct measurement of the W boson total decay width, Gamma(W), using the Collider Detector at Fermilab. The measurement uses an integrated luminosity of 90 pb-L, collected during the 1994-1995 run of the Fermilab Tevatron pr collider. The width is determined by normalizing predicted signal and background distributions to 49 843 W --> ev candidates and 21 806 W --> mu nu candidates in the transverse-mass region M-T < 200 GeV and then fitting the predicted shape to the 438 electron events and 196 muon events in the high-M-T region, 100 < M-T < 200 GeV. The result is Gamma(W) = 2.04 +/- 0.11(stat) +/- 0.09(syst) GeV.

Type: Article
Title: Direct measurement of the W boson width in p(p)over-bar collisions at root s=1.8 TeV
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.85.3347
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.85.3347
Language: English
Additional information: © 2000 The American Physical Society
Keywords: PARTON DISTRIBUTIONS, MASS
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/131935
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