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Measurement of the W mass and width in e(+)e(-) collisions at 183 GeV

Abbiendi, G; Ackerstaff, K; Alexander, G; Allison, J; Altekamp, N; Anderson, KJ; Anderson, S; ... OPAL Collaboration, ; + view all (1999) Measurement of the W mass and width in e(+)e(-) collisions at 183 GeV. PHYS LETT B , 453 (1-2) 138 - 152.

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Abstract

Using a data sample of 57 pb(-1) recorded at a centre-of-mass energy of 183 GeV with the OPAL detector at LEP, 282 W+W- --> q (q) over bar q (q) over bar and 300 W+W- --> q (q) over bar l<(nu)over bar>(l) candidate events are used to obtain a measurement of the mass of the W boson, M-W = 80.39 +/- 0.13 (stat.) +/- 0.05 (syst.) GeV, assuming the Standard Model relation between M-W and Gamma(W). A second fit provides a direct measure of the width of the W boson and gives Gamma(W) = 1.96 +/- 0.34 (stat.) +/- 0.20 (syst.) GeV. These results are combined with previous OPAL results to obtain M-W = 80.38 +/- 0.12 (stat.) +/- 0.05 (syst.) GeV and Gamma(W) = 1.84 +/- 0.32 (stat.) +/- 0.20 (syst.) GeV. (C) 1999 Published by Elsevier Science B.V. All rights reserved.

Type: Article
Title: Measurement of the W mass and width in e(+)e(-) collisions at 183 GeV
Keywords: MONTE-CARLO PROGRAM, PAIR CROSS-SECTION, BOSON MASS, E+E ANNIHILATION, EVENT GENERATOR, STANDARD MODEL, ROOT-S=161 GEV, DETECTOR, LEP, LEP2/NLC
UCL classification: UCL > School of BEAMS
UCL > School of BEAMS > Faculty of Maths and Physical Sciences
URI: http://discovery.ucl.ac.uk/id/eprint/1303372
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