Issues in determining alphaₛ from hadronic tau decay and electroproduction data
Boito, D. · Cata, O. · Golterman, M. · Jamin, M. · Maltman, K. · Osborne, J. · Peris, S.
Original · EN
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 alphaₛ 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.
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