The tau lepton lifetime has been measured using three different methods with the DELPHI detector. Two measurements of one-prong decays are combined, accounting for correlations, giving a result of tau(tau) = 291.8 +/- 3.3 (stat.) +/- 2.0(sys.) fs while the decay length distribution of three-prong decays gives the result tau(tau) = 286.7 +/- 4.9 (stat.) +/- 3.3 (sys.) fs. Combining the results presented here with previous DELPHI measurements, we get tau(tau) = 291.4 +/- 3.0 fs and find that the ratio of the coupling constant for tau decay relative to that for muon decay is 0.990 +/- 0.009, compatible with lepton universality
The tau lepton lifetime has been measured with the e(+) e(-) --> tau(+) tau(-) events collected by t...
The tau lepton lifetime has been measured with the e(+) e(-) → tau(+) tau(-) events collected by the...
The tau lepton lifetime has been measured with the e+e- rarr tau + tau - events collected by the DEL...
The tau lepton lifetime has been measured using three different methods with the DELPHI detector. Tw...
The tau lepton lifetime has been measured using three different methods with the DELPHI detector. Tw...
The tau lepton lifetime is measured using four different methods with the DELPHI detector. Three mea...
The tau lepton lifetime is measured using four different methods with the DELPHI detector. Three mea...
The tau lepton lifetime is measured using four different methods with the DELPHI detector. Three mea...
The tau lepton lifetime is measured using four different methods with the DELPHI detector. Three mea...
The lifetime of the tau lepton has been measured by two independent methods using a silicon microver...
The lifetime of the tau lepton has been measured by two independent methods using a silicon microver...
The tau lepton lifetime has been measured with the e+e- -> tau+tau- events collected by the DELPHI d...
The tau lepton lifetime has been measured with the e+e- -> tau+tau- events collected by the DELPHI d...
The tau lepton lifetime has been measured with the e(+) e(-) --> tau(+) tau(-) events collected by t...
The tau lepton lifetime has been measured with the e(+) e(-) → tau(+) tau(-) events collected by the...
The tau lepton lifetime has been measured with the e+e- rarr tau + tau - events collected by the DEL...
The tau lepton lifetime has been measured using three different methods with the DELPHI detector. Tw...
The tau lepton lifetime has been measured using three different methods with the DELPHI detector. Tw...
The tau lepton lifetime is measured using four different methods with the DELPHI detector. Three mea...
The tau lepton lifetime is measured using four different methods with the DELPHI detector. Three mea...
The tau lepton lifetime is measured using four different methods with the DELPHI detector. Three mea...
The tau lepton lifetime is measured using four different methods with the DELPHI detector. Three mea...
The lifetime of the tau lepton has been measured by two independent methods using a silicon microver...
The lifetime of the tau lepton has been measured by two independent methods using a silicon microver...
The tau lepton lifetime has been measured with the e+e- -> tau+tau- events collected by the DELPHI d...
The tau lepton lifetime has been measured with the e+e- -> tau+tau- events collected by the DELPHI d...
The tau lepton lifetime has been measured with the e(+) e(-) --> tau(+) tau(-) events collected by t...
The tau lepton lifetime has been measured with the e(+) e(-) → tau(+) tau(-) events collected by the...
The tau lepton lifetime has been measured with the e+e- rarr tau + tau - events collected by the DEL...