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Updated measurement of the tau lepton lifetime

Research output: Contribution to Journal/Magazine › Journal article › peer-review

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  • ALEPH Collaboration
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<mark>Journal publication date</mark>1997
<mark>Journal</mark>Physics Letters B
Issue number3-4
Volume414
Number of pages11
Pages (from-to)362-372
Publication StatusPublished
<mark>Original language</mark>English

Abstract

A new measurement of the mean lifetime of the τ lepton is presented. Three different analysis methods are applied to a sample of 90 000 τ pairs, collected in 1993 and 1994 with the ALEPH detector at LEP. The average of this measurement and those previously published by ALEPH is ττ = 290.1 ± 1.5 ± 1.1 fs.