On the discrepancy between the FOPT and CIPT approaches for hadronic tau spectral function moments

The discrepancy between the FOPT and CIPT approaches for hadronic tau spectral function moments constitutes the major theoretical uncertainty for strong coupling determinations from tau decay data. We show that the discrepancy can be analytically understood since the Borel representations -- which...

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Bibliographic Details
Main Author: Andre H. Hoang, Christoph Regner
Format: Article
Language:English
Published: SciPost 2022-06-01
Series:SciPost Physics Proceedings
Online Access:https://scipost.org/SciPostPhysProc.7.005