Possible bound state of a K - meson with a 4He nucleus

The analytic theory of nuclear level shifts developed in some earlier papers is applied to the 4He K - atom. The experimental data on the shift of the 2p level indicate that there may be a weakly bound state in the 4He K - system. The binding is ''weak'' on the nuclear scale; the binding energy is epsilonapprox.100 keV. The probabilities for radiative transitions to this level are calculated