Measurement of tau polarization in e+ e- annihilation at sqrt{s}=58 GeV
High Energy Physics - Experiment
2009-10-30 v1
Abstract
The polarization of tau leptons in the reaction e+ e- --> tau+ tau- has been measured using a e+e- collider, TRISTAN, at the center-of-mass energy of 58 GeV. From the kinematical distributions of daughter particles in tau --> e nu nu-bar, mu nu nu-bar, rho nu or pi(K) nu decays, the average polarization of tau- and its forward-backward asymmetry have been evaluated to be 0.012 +- 0.058 and 0.029 +- 0.057, respectively.
Cite
@article{arxiv.hep-ex/9703003,
title = {Measurement of tau polarization in e+ e- annihilation at sqrt{s}=58 GeV},
author = {H. Hanai},
journal= {arXiv preprint arXiv:hep-ex/9703003},
year = {2009}
}
Comments
18 pages, 5 figures