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arXiv · 0710.1368

Measurement of the Tau Lepton Polarisation at LEP2

DELPHI Collaboration·J. Abdallah
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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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DELPHI Collaboration, J. Abdallah. 2007-10-06. Measurement of the Tau Lepton Polarisation at LEP2. https://doi.org/10.1016/j.physletb.2007.10.022

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