A measurement of the tau mass and the first CPT test with tau leptons

Abstract

We measure the mass of the tau lepton to be 1775.1+-1.6(stat)+-1.0(syst.) MeV using tau pairs from Z0 decays. To test CPT invariance we compare the masses of the positively and negatively charged tau leptons. The relative mass difference is found to be smaller than 3.0 10^-3 at the 90% confidence level.

arXiv comment10 pages, 4 figures, Submitted to Phys. Letts. B

References in corpus (1)

• Measurement of the Strong Coupling Constant and the Vector and Axial-Vector Spectral Functions in Hadronic Tau Decays

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