Hyperon decay form factors in chiral perturbation theory

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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).
21 pages, 3 figures; discussion extended, references added, version published in JHEP

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High Energy Physics - Phenomenology, High Energy Physics - Experiment, High Energy Physics - Lattice

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http://salesiana.dossiersoluciones.com/handle/123456789/193520

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0708.3957
 http://arxiv.org/abs/0708.3957
 JHEP0710:083,2007
 doi:10.1088/1126-6708/2007/10/083

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arXiv