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Status and prospect of weak radiative hyperon decays
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Weak radiative hyperon decays represent a rich interplay between weak interactions and the internal structure of baryons, offering profound insights into Quantum Chromodynamics and weak interactions. Recent experimental observations, particularly from BESIII, have revealed deviations from theoretical predictions. These deviations could signal new physics or the need for refined theoretical models incorporating intermediate resonance effects. This review discusses recent theoretical advancements and key experimental findings, focusing on recent measurements from BESIII and their implications for strong interactions and baryon structure.
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Cited by 2 Pith papers
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Unraveling weak radiative hyperon decays with broken flavor symmetry
A broken-SU(3) fit with eight parameters reproduces the observed hyperon radiative decay data and predicts a sizable negative Xi- -> Sigma- gamma asymmetry that current data do not rule out.
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SU(3) flavor symmetry analysis of hyperon non-leptonic two body decays
An SU(3)-based fit with strange-quark-mass corrections reproduces most hyperon decay data, but leaves a weak 1-sigma deviation in Sigma+ to p pi0 that the authors interpret as a possible sign of new physics.
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