Tau Decays and $\alpha_s$
High Energy Physics - Experiment
2015-04-23 v2 High Energy Physics - Phenomenology
Abstract
The evolution of the determination of the strong coupling constant from the leptonic branching ratios, the lifetime, and the invariant mass distributions of the hadronic final state of the lepton over the last two decades is briefly reviewed. The improvements in the latest ALEPH update are described in some detail. Currently this is one of the most precise determinations. Together with the other determination at the boson mass pole, they constitutes the most accurate test of the asymptotic freedom in QCD.
Keywords
Cite
@article{arxiv.1412.6326,
title = {Tau Decays and $\alpha_s$},
author = {Zhiqing Zhang},
journal= {arXiv preprint arXiv:1412.6326},
year = {2015}
}
Comments
5 pages, 3 figures, proceedings for TAU 2014, published version