Publication Date:
2021-03-01
Description:
We provide a dispersion-theoretical representation of the reaction amplitudes $$gamma K
ightarrow K pi $$ γ K → K π in all charge channels, based on modern pion–kaon P-wave phase shift input. Crossed-channel singularities are fixed from phenomenology as far as possible. We demonstrate how the subtraction constants can be matched to a low-energy theorem and radiative couplings of the $$K^*(892)$$ K ∗ ( 892 ) resonances, thereby providing a model-independent framework for future analyses of high-precision kaon Primakoff data.
Print ISSN:
1434-6044
Electronic ISSN:
1434-6052
Topics:
Physics
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