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Johan Bijnens in front of his whiteboard

Johan Bijnens

Professor, Deputy Head of Division

Johan Bijnens in front of his whiteboard

Analytic representation of FK /Fπ in two loop chiral perturbation theory

Author

  • B. Ananthanarayan
  • Johan Bijnens
  • Samuel Friot
  • Shayan Ghosh

Summary, in English

We present an analytic representation of FK/Fπ as calculated in three-flavor two-loop chiral perturbation theory, which involves expressing three mass scale sunsets in terms of Kampé de Fériet series. We demonstrate how approximations may be made to obtain relatively compact analytic representations. An illustrative set of fits using lattice data is also presented, which shows good agreement with existing fits.

Department/s

  • Theoretical Particle Physics - Has been reorganised

Publishing year

2018-05-01

Language

English

Publication/Series

Physical Review D

Volume

97

Issue

9

Document type

Journal article

Publisher

American Physical Society

Topic

  • Subatomic Physics

Status

Published

ISBN/ISSN/Other

  • ISSN: 2470-0010