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.

T., A., H., A., A., A., M. G., A., P., A., S. R., A., et al. (2000). Direct measurement of the W boson width in p(p)over-bar collisions at root s=1.8 TeV. PHYSICAL REVIEW LETTERS, 85(16), 3347-3352 [10.1103/PhysRevLett.85.3347].

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

PAOLETTI, RICCARDO;
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
T., A., H., A., A., A., M. G., A., P., A., S. R., A., et al. (2000). Direct measurement of the W boson width in p(p)over-bar collisions at root s=1.8 TeV. PHYSICAL REVIEW LETTERS, 85(16), 3347-3352 [10.1103/PhysRevLett.85.3347].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/39943
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