Regular Article - Theoretical Physics
Coupled-channels Faddeev AGS calculation of K-ppn and K-ppp quasi-bound states
Department of Physics, Isfahan University of Technology, 84156-83111, Isfahan, Iran
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Accepted: 2 August 2016
Published online: 14 September 2016
Using separable - potentials in the Faddeev equations, we calculated the binding energies and widths of the , and quasi-bound states on the basis of three- and four-body Alt-Grassberger-Sandhas equations in the momentum representation. One- and two-pole version of - interaction are considered and the dependence of the resulting few-body energy on the two-body - potential was investigated. The s -wave [3 + 1] and [2 + 2] sub-amplitudes are obtained by using the Hilbert-Schmidt expansion procedure for the integral kernels. As a result, we found a four-body resonance of the K - ppn and quasi-bound states with a binding energy in the range 55-70 and 90-100 MeV, respectively. The calculations yielded full width of 16-20 and 7-20 MeV.
© SIF, Springer-Verlag Berlin Heidelberg, 2016