Review of tau lifetime measurements

Details Review of tau lifetime measurements Review of tau lifetime measurements

1998-11-23

arxiv.org/abs/hep-ex/9811037v1

Nucl.Phys.Proc.Suppl. 76 (1999) 107-116

Physics

High Energy Physics

High Energy Physics - Experiment

Invited talk presented at the Fifth International Workshop on Tau Lepton Physics, Santander, Spain, 14-17 September 1998; 10 p

Scientific paper

10.1016/S0920-5632(99)00434-X

The measurements of the mean lifetime of the tau lepton are reviewed. The conditions for measuring the lifetime at various e+e- colliders are compared and the analysis methods are briefly described. The new developments since the previous Workshop on Tau Lepton Physics are listed. The world average is tau_tau = 290.5 +- 1.0 fs. The LEP experiments dominate this average and have analyzed nearly all of their data. In anticipation of the next era of precision measurements at CLEO and the b factories, the important sources of systematic errors and the treatment of systematic biases are discussed.

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