We provide a dispersion-theoretical representation of the reaction amplitudes $\gamma K\rightarrow K \pi$ 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 $K^*(892)$ resonances, thereby providing a model-independent framework for future analyses of high-precision kaon Primakoff data.
Dispersive analysis of the Primakoff reaction $\gamma K\to K\pi$
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Pre-published on:
February 07, 2024
Published on:
March 07, 2024
Abstract
DOI: https://doi.org/10.22323/1.413.0048
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Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.