Isospin properties of (image) reactions for the formation of deeply-bound antikaonic nuclei Original Research Article

The formation of deeply-bound antikaonic View the MathML source nuclear states in nuclear (K−,N) reactions is investigated theoretically within a distorted-wave impulse approximation (DWIA), considering the isospin properties of the Fermi-averaged View the MathML source elementary amplitudes. We calculate the formation cross sections of the deeply-bound View the MathML source states by the (K−,N) reactions on the nuclear targets, 12C and 28Si, at incident K− lab momentum pK−=1.0 GeV/c and θlab=0°, introducing a complex effective nucleon number Neff for unstable bound states in the DWIA. The results show that the deeply-bound View the MathML source states can be populated dominantly by the (K−,n) reaction via the total isoscalar ΔT=0 transition owing to the isospin nature of the View the MathML source amplitudes, and that the cross sections described by ReNeff and ArgNeff enable to deduce the structure of the View the MathML source nuclear states; the calculated inclusive nucleon spectra for a deep View the MathML source-nucleus potential do not show distinct peak structure in the bound region. The few-body View the MathML source and View the MathML source states formed in (K−,N) reactions on s-shell nuclear targets, 3He, 3H and 4He, are also discussed.