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arXiv · 0708.3957

Hyperon decay form factors in chiral perturbation theory

Andre Lacour·Bastian Kubis·Ulf-G. Meißner
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Abstract

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).

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Andre Lacour, Bastian Kubis, Ulf-G. Meißner. 2007-10-24. Hyperon decay form factors in chiral perturbation theory. https://doi.org/10.1088/1126-6708%2F2007%2F10%2F083

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