A measurement of the τ lepton lifetime

Kleinwort, C. and Finch, Alexander (1989) A measurement of the τ lepton lifetime. Zeitschrift für Physik C Particles and Fields, 42 (1). p. 7. ISSN 0170-9739

Abstract

The lifetime of the τ lepton was measured using two different techniques. From the impact parameter distribution of 3132 one prong decays ττ = (289±33±26) fs was obtained and from the decay length distribution of 648 three prong decays ττ = (309 −34 +35±11) fs. These results were combined to give a final value of ττ = (301±29) fs.