https://doi.org/10.1140/epjc/s10052-024-13615-7
Regular Article
Polarizabilities from kaon Compton scattering
Helmholtz-Institut für Strahlen- und Kernphysik (Theorie), Bethe Center for Theoretical Physics, Universität Bonn, 53115, Bonn, Germany
Received:
18
September
2024
Accepted:
14
November
2024
Published online:
6
December
2024
The polarizabilities of light pseudoscalar mesons can be extracted from differential cross sections for Compton scattering near threshold. While this has been accomplished for charged pions employing Primakoff reactions, a corresponding measurement for kaons will be affected by the presence of the 
resonance not too far from threshold. We propose a method to extend the energy range serviceable for this purpose by reconstructing the contribution model-independently from its 
intermediate state, using dispersion theory. We point out that, in contrast to the charged-pion analog, there is likely no strong hierarchy between sum and difference of electric and magnetic dipole polarizabilities; we discuss the sensitivity to disentangling both by improved experimental angular coverage.
© The Author(s) 2024
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