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arXiv · hep-ph/0207193

Weak radiative hyperon decays

P. Zenczykowski
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Abstract

The problem of weak radiative hyperon decays (WRHD) is reviewed. With the recent measurement of the $Ξ^0 \to Λγ$ asymmetry confirming Hara's theorem, implications from its violation in low-energy theoretical approaches are discussed. It is shown how an underlying symmetry link should be formulated for a successful description of both nonleptonic and radiative weak hyperon decays. The sign of the $Ξ^0 \to Λγ$ asymmetry and the overall size of parity-violating WRHD amplitudes together lead to the resolution of the old S:P problem in nonleptonic decays.

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P. Zenczykowski. 2002-07-16. Weak radiative hyperon decays. https://doi.org/10.1016/s0920-5632(02)01946-1

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