EXA2011

Coupled channels Faddeev equations are being solved for the Kbar+d break-up reaction in the Kbar-N-N<->pi-Sigma-N three-body system. The main aim is to calculate the neutron spectra for fixed incident kaon energy - a really ob- servable quantity, which is directly related to the shape of the Lambda(1405) state,as opposed to the widely used hypothetical curves, such as sub-threshold Kbar-p amplitudes or pi-Sigma cross sections. We plan to investigate the effect of different Kbar-N interaction models on this spectrum, basically using interaction types introduced in [1] and further develop- ped in subsequent papers of N.V.Shevchenko, e.g. [2]. [1] J.Revai, N.V.Shevchenko Isospin mixing effects in the low-energy Kbar-N - pi-Sigma interaction Phys. Rev. C 79, 035202 (2009) [2] N.V.Shevchenko One- versus two-pole Kbar-N - pi-Sigma potential: Kbar-d scattering length arXiv: 1103.4974