Extracting m_s From Flavor Breaking in Hadronic Tau Decays
classification
✦ hep-ph
keywords
dataextractinghadronicvectoraboveanalysesassociatedaxial
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New finite energy sum rules (FESR's) for extracting m_s from hadronic tau decay data are constructed which (1) significantly reduce potential theoretical uncertainties present in existing sum rule analyses and (2) remove problems associated with both the poor convergence of the OPE representation of the longitudinal part of the $us$ vector and axial vector correlators and the large statistical errors in the $us$ spectral data above the K^* region.
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