Anomalous Coulomb correction to the scattering length in connection with the shift of the ground level of the K-p atom
Kerbikov B. O.
It is shown for the case of an exactly solvable model that in an absorbing system the Coulomb correction to the scattering length is large where the scattering length itself is small. The anomalously large Coulomb correction to the KN scattering length is discussed as a possible explanation of the contradiction between the values of the KN scattering length obtained from low-energy KN scattering and those obtained from the shift of the ground level of the К ~p atom.