Measurement of the Tau Lifetime at SLD

Physics – High Energy Physics – High Energy Physics - Experiment

Scientific paper

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20 pages, uuencoded gzip-compressed postscript (302 kB) Uncompressed postscript file (855 kB) available via anonymous ftp as

Scientific paper

10.1103/PhysRevD.52.4828

A measurement of the lifetime of the tau lepton has been made using a sample of 1671 $Z^0\rightarrow\tau^+\tau^-$ decays collected by the SLD detector at SLC. The measurement benefits from the small and stable collision region at SLC and the precision vertex detector of SLD. Three analysis techniques have been used: decay length, impact parameter, and impact parameter difference methods. The combined result is $\tau_\tau = 297\pm 9(stat.)\pm 5(syst.)$ fs.

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