Measurement of the tau lepton lifetime
Collaboration
12 pages
Published in:
- Phys.Lett.B 273 (1991) 355-366
- Published: 1991
Report number:
- CERN-PPE-91-164
Experiments:
View in:
Citations per year
Abstract: (Elsevier)
The tau lepton lifetime has been measured using two independent techniques; an impact parameter analysis of the 1-prong decays and a decay length analysis of the 3-prong decays. Approximately 5 000 Z 0 decays to τ + τ − have been selected from the data collected with the OPAL detector at LEP during 1990. The results of the two statistically independent measurements are, respectively, τ 1 =0.293 ± 0.013 (stat.)±0.013 (syst.) ps and τ 3 =0.327±0.017 (stat.)±0.011 (syst.) ps. After combining the statistical and systematic errors for each analysis in quadrature, the weighted average lifetime is calculated to be τ τ =0.308 ± 0.013 ps.- electron positron: colliding beams
- colliding beams: electron positron
- electron positron: annihilation
- annihilation: electron positron
- Z0: electroproduction
- electroproduction: Z0
- tau: pair production
- pair production: tau
- tau: semileptonic decay
- semileptonic decay: tau
References(15)
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