Current Status of inclusive hadronic tau determinations of |V_us

Autor: K. Maltman, P.A. Boyle, R.J. Hudspith, T. Izubuchi, A. Juttner, C. Lehner, R. Lewis, H. Ohki, A. Portelli, M. Spraggs, J.M. Zanotti
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: SciPost Physics Proceedings, Iss 1, p 006 (2019)
Druh dokumentu: article
ISSN: 2666-4003
DOI: 10.21468/SciPostPhysProc.1.006
Popis: We review the status of the determination of |V_{us}| from both flavor-breaking finite-energy sum rules based on inclusive non-strange and strange hadronic tau decay data and the recent lattice-based analysis of inclusive strange hadronic tau decay data. In particular, we update the results from these analysis frameworks taking into account recent improvements to a number of strange branching fractions reported by HFLAV at CKM2018 and this meeting. We find that inclusive tau decay data yields results for |V_{us}| compatible within errors with the expectations of three-family unitarity.
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