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Direct measurement of the W boson width in p(p)over-bar collisions at root s=1.96 TeV

Aaltonen, T; Adelman, J; Akimoto, T; Albrow, MG; Gonzalez, BA; Amerio, S; Amidei, D; ... Zucchelli, S; + view all (2008) Direct measurement of the W boson width in p(p)over-bar collisions at root s=1.96 TeV. PHYS REV LETT , 100 (7) , Article 071801. 10.1103/PhysRevLett.100.071801. Green open access

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Abstract

A direct measurement of the total decay width of the W boson Gamma(W) is presented using 350 pb(-1) of data from p (p) over bar collisions at root s = 1.96 TeV collected with the CDF II detector at the Fermilab Tevatron. The width is determined by normalizing predicted signal and background distributions to 230 185 W candidates decaying to e nu and mu nu in the transverse-mass region 50 < M-T < 90 GeV and then fitting the predicted shape to 6055 events in the high-M-T region, 90 < M-T < 200 GeV. The result is Gamma(W) = 2032 +/- 45(stat) +/- 57(syst) MeV, consistent with the standard model expectation.

Type: Article
Title: Direct measurement of the W boson width in p(p)over-bar collisions at root s=1.96 TeV
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.100.071801
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.100.071801
Language: English
Additional information: © 2008 The American Physical Society
Keywords: QED RADIATIVE-CORRECTIONS, UNIVERSAL MONTE-CARLO, HIGH-PT W, E(+)E(-) COLLISIONS, MASS, DETECTOR, PHYSICS, DECAYS, GLUONS, PHOTOS
UCL classification: UCL
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/131682
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