Updated measurement of the tau lepton lifetime
High Energy Physics - Experiment
2012-08-27 v1
Abstract
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.
Cite
@article{arxiv.hep-ex/9710026,
title = {Updated measurement of the tau lepton lifetime},
author = {The ALEPH Collaboration},
journal= {arXiv preprint arXiv:hep-ex/9710026},
year = {2012}
}
Comments
17 pages, Latex; to be published in Physics Letters B