The pion mass and decay constant at three loops in two-flavour chiral perturbation theory

被引：0

作者：

Johan Bijnens

Nils Hermansson Truedsson

机构：

[1] Lund University,Department of Astronomy and Theoretical Physics

来源：

Journal of High Energy Physics | / 2017卷

关键词：

Chiral Lagrangians; Effective Field Theories;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

A calculation of the pion mass and decay constant at NNNLO in two-flavour chiral perturbation theory is presented. The results are cross-checked by using both the exponential and square root parametrizations of the Goldstone matrix field, as well as by comparing to the known leading log coefficients of the two quantities. A small numerical study of the quark mass dependence is performed, and for a physical quark mass there is good agreement with lower order results.

引用

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