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Three-loop b → sγ vertex with current-current operators


Fael, Matteo; Lange, Fabian; Schönwald, Kay; Steinhauser, Matthias (2023). Three-loop b → sγ vertex with current-current operators. Journal of High Energy Physics, 2023(11):166.

Abstract

We compute three-loop vertex corrections to b → sγ induced by current-current operators. The results are presented as expansions in m$_{c}$/m$_{b}$ with numerical coefficients which allow to cover all relevant values for the heavy quark masses in different renormalization schemes. Moreover we provide for the first time analytic results for the next-to-leading order contribution. Our results present an important building block to the next-to-next-to-leading order interference contributions of the current-current operators Q$_{1}$ and Q$_{2}$ with the electric dipole operator Q$_{7}$.

Abstract

We compute three-loop vertex corrections to b → sγ induced by current-current operators. The results are presented as expansions in m$_{c}$/m$_{b}$ with numerical coefficients which allow to cover all relevant values for the heavy quark masses in different renormalization schemes. Moreover we provide for the first time analytic results for the next-to-leading order contribution. Our results present an important building block to the next-to-next-to-leading order interference contributions of the current-current operators Q$_{1}$ and Q$_{2}$ with the electric dipole operator Q$_{7}$.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Scopus Subject Areas:Physical Sciences > Nuclear and High Energy Physics
Uncontrolled Keywords:Nuclear and High Energy Physics
Language:English
Date:23 November 2023
Deposited On:05 Jan 2024 11:32
Last Modified:28 Jun 2024 03:36
Publisher:Springer
ISSN:1029-8479
OA Status:Gold
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1007/jhep11(2023)166
  • Content: Published Version
  • Language: English
  • Licence: Creative Commons: Attribution 4.0 International (CC BY 4.0)