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

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Abstract

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.

Detaljer

Författare
Enheter & grupper
Externa organisationer
  • Indian Institute of Science
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Subatomär fysik
Originalspråkengelska
Artikelnummer091502
TidskriftPhysical Review D
Volym97
Utgivningsnummer9
StatusPublished - 2018 maj 1
PublikationskategoriForskning
Peer review utfördJa