Hyperon decay form factors in chiral perturbation theory

被引：21

作者：

Lacour, Andre ^{[1
]}

Kubis, Bastian

Meissner, Ulf G.

机构：

[1] Univ Bonn, Helmholtz Inst Strahlen & Kernphys Theorie, Nussallee 14-16, D-53115 Bonn, Germany

[2] Forschungszentrum Julich, Inst Kernphys Theorie, D-52425 Julich, Germany

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2007年 / 10期

关键词：

Quark masses and SM parameters; weak decays; QCD; Chiral Lagrangians;

D O I：

10.1088/1126-6708/2007/10/083

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We present a complete calculation of the SU(3)-breaking corrections to the hyperon vector form factors up to O(p(4)) in covariant baryon chiral perturbation theory. Partial higher-order contributions are obtained, and we discuss chiral extrapolations of the vector form factor at zero momentum transfer. In addition we derive low-energy theorems for the subleading moments in hyperon decays, the weak Dirac radii and the weak anomalous magnetic moments, up to O(p(4)).

引用

页数：21

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