/ Experiment-HEP arXiv:0710.1368

Measurement of the Tau Lepton Polarisation at LEP2

Published in: Phys.Lett.
Year: 2008
Vol.: B659
Page No: 65-73
Pages: 17

Abstract: A first measurement of the average polarisation P_tau of tau leptons produced in e+e- annihilation at energies significantly above the Z resonance is presented. The polarisation is determined from the kinematic spectra of tau hadronic decays. The measured value P_tau = -0.164 +/- 0.125 is consistent with the Standard Model prediction for the mean LEP energy of 197 GeV.

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