Abstract
Antikaon-deuteron scattering is studied at low energies within the non-relativistic effective field theory (EFT) approach. The largest contribution to the \(\bar K d\) scattering length stems from the multiple scattering series with infinitely heavy (static) nucleons. While the leading static contribution is inherently non-perturbative and requires resummation, the correction to the scattering length due to the nucleon recoil (retardation) effect is amenable to the perturbative treatment with respect to the small parameter ξ=MK/mN. The first order correction to the K−d scattering length due to single insertion of the retardation term in the multiple-scattering series is calculated. The leading recoil effect turns out to be reasonably small and contributes less than 10 % to the scattering length.
Published Version
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