Updated measurement of the tau lepton lifetime

Details Updated measurement of the tau lepton lifetime Updated measurement of the tau lepton lifetime

1997-10-23

arxiv.org/abs/hep-ex/9710026v1

Phys.Lett.B414:362-372,1997

Physics

High Energy Physics

High Energy Physics - Experiment

17 pages, Latex; to be published in Physics Letters B

Scientific paper

10.1016/S0370-2693(97)01116-7

A new measurement of the mean lifetime of the tau lepton is presented. Three
different analysis methods are applied to a sample of 90000 tau pairs,
collected in 1993 and 1994 with the ALEPH detector at LEP. The average of this
measurement and those previously published by ALEPH is tau_tau = 290.1 +- 1.5
+- 1.1 fs.

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