Titel
On the discrepancy between the FOPT and CIPT approaches for hadronic tau spectral function moments
Autor*in
Abstract
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 have been assumed to be identical for both approaches previously -- differ in the presence of IR renormalons. This implies that the OPE condensate corrections are different for both approaches and that the discrepancy may eventually be reconciled. In the talk we explain the difference and some mathematical aspects of the FOPT and CIPT Borel representations and show numerical results.
Stichwort
General MedicineGeneral Chemistry
Objekt-Typ
Sprache
Englisch [eng]
Persistent identifier
Erschienen in
Titel
SciPost Physics Proceedings
Ausgabe
7
ISSN
2666-4003
Erscheinungsdatum
2022
Publication
Stichting SciPost
Erscheinungsdatum
2022
Zugänglichkeit
Rechte
Rechteangabe
Copyright A. Hoang and C. Regner
Universität Wien | Universitätsring 1 | 1010 Wien | T
+43-1-4277-0