Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1845534 | Nuclear Physics B - Proceedings Supplements | 2012 | 4 Pages |
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 αs from hadronic τ 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.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics