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Analytic representation of F-k/F-pi in two loop chiral perturbation theory

Ananthanarayan, B and Bijnens, Johan and Friot, Samuel and Ghosh, Shayan (2018) Analytic representation of F-k/F-pi in two loop chiral perturbation theory. In: PHYSICAL REVIEW D, 97 (9).

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Official URL: https://dx.doi.org/10.1103/PhysRevD.97.091502

Abstract

We present an analytic representation of F-K / F(pi )as calculated in three-flavor two-loop chiral perturbation theory, which involves expressing three mass scale sunsets in terms of Kampe de Feriet 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.

Item Type: Journal Article
Additional Information: Copy right of this article belong to AMER PHYSICAL SOC, ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
Department/Centre: Division of Physical & Mathematical Sciences > Centre for High Energy Physics
Depositing User: Id for Latest eprints
Date Deposited: 15 Jun 2018 14:42
Last Modified: 15 Jun 2018 14:42
URI: http://eprints.iisc.ac.in/id/eprint/60018

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