In this thesis, to solve the current debate on the position of the quasi-bound state, namely, “ or ”, we have used stopped- absorption data on 4 He. The ?? invariant-mass spectra in the resonant capture of at rest in 4 He, 3 He and d are calculated by a coupled-channel procedure for a quasi-bound state of an arbitrary chosen mass ( M ) and width ( ? ). Key Words : , kaonic nuclei, Deeply bound Kaonic Nuclear states, Deviation spectrum,, Faddeev calculation, pole state, decaying state.