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arXiv · hep-ph/9908298

Constraints on $s\to d γ$ from Radiative Hyperon and Kaon Decays

Xiao-Gang He·German Valencia
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Abstract

The quark-level process $b \to s γ$ has been used extensively to place constraints on new interactions. These same interactions can be further constrained from the enhancement they induce in the quark-level $s \to d γ$ transition, to the extent that the short distance contributions can be separated from the long distance contributions. We parameterize what is known about the long distance amplitudes and subtract it from the data in radiative hyperon and kaon decays to constrain new interactions.

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Xiao-Gang He, German Valencia. 1999-08-08. Constraints on $s\to d γ$ from Radiative Hyperon and Kaon Decays. https://doi.org/10.1103/physrevd.61.075003

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