Analytic representation of FK /Fπ in two loop chiral perturbation theory
(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:
https://lup.lub.lu.se/record/65600325-7945-426a-98a2-907e10f42cfe
- author
- Ananthanarayan, B. ; Bijnens, Johan LU ; Friot, Samuel and Ghosh, Shayan
- organization
- publishing date
- 2018-05-01
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review D
- volume
- 97
- issue
- 9
- article number
- 091502
- 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
- 2024-04-15 08:41:40
@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>}}, 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}}, doi = {{10.1103/PhysRevD.97.091502}}, volume = {{97}}, year = {{2018}}, }