The tau lepton lifetime has been measured with the e+e- rarr tau + tau - events collected by the DELPHI detector at LEP in the years 1991-1995. Three different methods have been exploited, using both one-prong and three-prong tau decay channels. These are combined with previously published DELPHI results to provide a tau lifetime measurement of tau tau =290.9+/-1.4stat+/-1.0sys fs, using the full LEP1 data sample.
Measurement of the tau lifetime with the DELPHI detector / A. Andreazza. - In: NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS. - ISSN 0920-5632. - 144(2005), pp. 97-104. [10.1016/j.nuclphysbps.2005.02.013]
Measurement of the tau lifetime with the DELPHI detector
A. AndreazzaPrimo
2005
Abstract
The tau lepton lifetime has been measured with the e+e- rarr tau + tau - events collected by the DELPHI detector at LEP in the years 1991-1995. Three different methods have been exploited, using both one-prong and three-prong tau decay channels. These are combined with previously published DELPHI results to provide a tau lifetime measurement of tau tau =290.9+/-1.4stat+/-1.0sys fs, using the full LEP1 data sample.
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