We discuss the quantitative impact of duality violations on the determination of the strong coupling constant from hadronic tau decays, based on a preliminary analysis of OPAL data.
@article{arxiv.1103.4194,
title = {Duality violations in hadronic tau decays and the value of alpha_s},
author = {Diogo Boito and Oscar Cata and Maarten Golterman and Matthias Jamin and Kim Maltman and James Osborne and Santiago Peris},
journal= {arXiv preprint arXiv:1103.4194},
year = {2011}
}
Comments
2 pages, contribution to Workshop on Precision Measurements of alpha_S, Feb. 9-11, 2011, Munich, Germany