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.
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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-pp.ucl.ac.uk/id/eprint/131682 |
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