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.

Direct measurement of the W boson width in p(p)over-bar collisions at root s=1.8 TeV RID C-1693-2008 RID A-5169-2010 RID C-2406-2008

DELL'ORSO, MAURO;DONATI, SIMONE;PUNZI, GIOVANNI;
2000-01-01

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.
2000
Affolder, T; Akimoto, H; Akopian, A; Albrow, Mg; Amaral, P; Amendolia, Sr; Amidei, D; Anikeev, K; Antos, J; Apollinari, G; Arisawa, T; Asakawa, T; Ash...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/163375
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