Issues in Determining α <inf>s</inf> from Hadronic τ Decay and Electroproduction Data

D. Boito, O. Catà, M. Golterman, M. Jamin, K. Maltman, J. Osborne, S. Peris

Research output: Contribution to journalArticleResearchpeer-review


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 α s 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. © 2012 Elsevier B.V.
Original languageEnglish
Pages (from-to)153-156
JournalNuclear Physics B - Proceedings Supplements
Publication statusPublished - 1 Apr 2012


  • α s
  • τ decay
  • Duality violation


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