The Strong Coupling: Measurements and Running
High Energy Physics - Experiment
2012-08-27 v1
Abstract
Measurements of \alpha_s from event shapes in e^{+} e^{-} annihilation are discussed including recent determinations using experimentally optimized scales, studies of theoretically motivated scale setting prescriptions, and recently observed problems with predictions in Next to Leading Logarithmic Approximation. Other recent precision measurements of \alpha_s are briefly discussed. The relevance of power terms for the energy evolution of event shape means and distributions is demonstrated. Finally a summary on the current results on \alpha_s(M_Z) and its running is given.
Cite
@article{arxiv.hep-ex/9812021,
title = {The Strong Coupling: Measurements and Running},
author = {DELPHI Collaboration},
journal= {arXiv preprint arXiv:hep-ex/9812021},
year = {2012}
}
Comments
Plenary talk given at the Hadron Structure 98, Stara Lesna, Slovakia, 7-13 Sep 98 (24 pp.)