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An analytic analysis of the pion decay constant in three-flavoured chiral perturbation theory

A representation of the two-loop contribution to the pion decay constant in SU(3) chiral perturbation theory is presented. The result is analytic up to the contribution of the three (different) mass sunset integrals, for which an expansion in their external momentum has been taken. We also give an a...

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Библиографические подробности
Опубликовано в: :Eur Phys J C Part Fields
Главные авторы: Ananthanarayan, B., Bijnens, Johan, Ghosh, Shayan
Формат: Artigo
Язык:Inglês
Опубликовано: Springer Berlin Heidelberg 2017
Предметы:
Online-ссылка:https://ncbi.nlm.nih.gov/pmc/articles/PMC5586975/
https://ncbi.nlm.nih.gov/pubmed/28943799
https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1140/epjc/s10052-017-5019-y
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