ePrints@IIScePrints@IISc Home | About | Browse | Latest Additions | Advanced Search | Contact | Help

Renormalization group improved ms and |Vus | determination from hadronic τ decays

Ananthanarayan, B and Das, D and Khan, MSAA (2022) Renormalization group improved ms and |Vus | determination from hadronic τ decays. In: Physical Review D, 106 (11).

Phy_Rev_106-11_2022.pdf - Published Version

Download (630kB) | Preview
Official URL: https://doi.org/10.1103/PhysRevD.106.114036


We determine the strange quark mass (ms) and quark mixing element |Vus|, and their joint determination from the Cabibbo suppressed hadronic τ decays in various perturbative schemes. We improve this analysis compared to the previous analysis based on the optimal renormalization or the renormalization group summed perturbation theory (RGSPT) scheme by replacing the theoretical longitudinal contributions with phenomenological parametrization; the RGSPT coefficients are used for the dimension-4 Adler functions. The improved analysis results in the extraction of ms(2 GeV)=98±19 MeV and |Vus|=0.2191±0.0043 from the RGSPT scheme.

Item Type: Journal Article
Publication: Physical Review D
Publisher: American Physical Society
Additional Information: The copyright for this article belongs to the Authors.
Department/Centre: Division of Physical & Mathematical Sciences > Centre for High Energy Physics
Date Deposited: 31 Jan 2023 09:31
Last Modified: 31 Jan 2023 09:31
URI: https://eprints.iisc.ac.in/id/eprint/79630

Actions (login required)

View Item View Item