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

Ananthanarayan, B.; Bijnens, Johan LU ; Friot, Samuel and Ghosh, Shayan (2018) In Physical Review D 97(9).
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.

Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review D
volume
97
issue
9
publisher
American Physical Society
external identifiers
  • scopus:85048696301
ISSN
2470-0010
DOI
10.1103/PhysRevD.97.091502
language
English
LU publication?
yes
id
65600325-7945-426a-98a2-907e10f42cfe
date added to LUP
2018-07-02 09:51:32
date last changed
2019-10-15 06:41:08
@article{65600325-7945-426a-98a2-907e10f42cfe,
  abstract     = {<p>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.</p>},
  articleno    = {091502},
  author       = {Ananthanarayan, B. and Bijnens, Johan and Friot, Samuel and Ghosh, Shayan},
  issn         = {2470-0010},
  language     = {eng},
  month        = {05},
  number       = {9},
  publisher    = {American Physical Society},
  series       = {Physical Review D},
  title        = {Analytic representation of FK /Fπ in two loop chiral perturbation theory},
  url          = {http://dx.doi.org/10.1103/PhysRevD.97.091502},
  volume       = {97},
  year         = {2018},
}