Two- and three-body resonances in the NN − πΣN system
Nuclear Physics Institute, 25068
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One of the most important characteristics of a two-body interaction is existence and properties of its bound states or resonances. When the interaction is used in a few- or many-body calculation they also strongly inﬂuence the properties of the few- or many-body system. We investigate the dependence of the three-body resonance properties in the NN system on the diﬀerent models of N interaction, providing one or two poles for Λ(1405) resonance. The NN − πΣN system is described by coupled-channel Faddeev equations in AGS form, our two-body N − πΣ interaction models reproduce all existing experimental data on K− p scattering and K− p atom level shift.
© Owned by the authors, published by EDP Sciences, 2010