Issues in determining alpha_s from hadronic tau decay and electroproduction data
High Energy Physics - Phenomenology
2015-06-03 v1 High Energy Physics - Experiment
Abstract
We discuss some key issues associated with duality-violating and non-perturbative OPE contributions to the theoretical representations of light quark current-current two-point functions and relevant to precision determinations of alpha_s from hadronic tau decay and electroproduction cross-section data. We demonstrate that analyses with an explicit representation of duality-violating effects are required to bring theoretical errors in such extractions under control, motivating the accompanying paper in these proceedings, which presents the results of such an analysis.
Cite
@article{arxiv.1112.4202,
title = {Issues in determining alpha_s from hadronic tau decay and electroproduction data},
author = {D. Boito and O. Cata and M. Golterman and M. Jamin and K. Maltman and J. Osborne and S. Peris},
journal= {arXiv preprint arXiv:1112.4202},
year = {2015}
}
Comments
5 pages, 4 figures. Prepared for the Proceedings of the International Workshop on e+e- collisions from Phi to Psi (PHIPSI11), Sep. 19-22, 2011, BINP, Novosibirsk, Russia