Strangeness-changing nonlepton decays of the kaons, hyperons, and the Ω− particle
We try to understand the strangeness changing nonleptonic decays of kaons, hyperons, and the Ω− particle in terms of the modern, renormalized weak Hamiltonian expressed as a sum of four-quark Wilson operators, including the so-called penguin operators c5O5 and c6O6 arising from gluon radiative corrections. It is found that these decays, including the long-standing s-wave/p-wave puzzle in hyperon decays, can be understood if the Wilson coefficient [Formula: see text] has a sign opposite to that obtained from short-distance perturbative quantum chromodynamics calculations and has an effective value such that [Formula: see text].
2012 ◽
Vol 14
(4)
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pp. 043046
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1984 ◽
Vol 53
(7)
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pp. 742-742
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1982 ◽
Vol 118
(1-3)
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pp. 141-144
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