K−NInteraction in theI=0State at Low Energies

The study of the $I=0\mathrm{}$ $K-N$ interaction at low energies using $K^{+}$-deuterium scattering has been extended on the experimental side by the inclusion of elastic and inelastic noncharge-exchange scattering, and on the theoretical side by a more detailed investigation of the final-state interaction between the two nucleons. The new results for the $I=0\mathrm{}$ phase shifts exhibit the same trends as those published before; however, the new $s$-wave data are more accurate. It is shown that at very low energies, the $I=0\mathrm{}$ $s$-wave scattering may be interpreted as due to a very small scattering length $A_0=+0.04\mathrm{}\pm 0.04$ F. This should be contrasted with the $I=1\mathrm{}$ scattering length $A_1=-0.31\mathrm{}\pm 0.01$ F.