Measurement of the Tau Lepton Polarisation at LEP2
High Energy Physics - Experiment
2008-11-26 v1
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.
Cite
@article{arxiv.0710.1368,
title = {Measurement of the Tau Lepton Polarisation at LEP2},
author = {DELPHI Collaboration and J. Abdallah},
journal= {arXiv preprint arXiv:0710.1368},
year = {2008}
}
Comments
17 pages, 5 figures, Accepted by Phys. Lett. B