Effective KN interaction based on chiral SU(3) dynamics

By T. Hyodo, W. W. T. Muenchen, Yitp, Kyoto Univ.. 2007

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The effective KN interaction based on chiral SU(3) coupled-channel dynamics is derived and its extrapolation below the KN threshold is studied in detail. Starting from the coupled-channel scattering equations, we eliminate the channels other than KN and obtain an effective interaction in the single KN channel. An equivalent local potential in coordinate space is constructed such as to reproduce the full scattering amplitude of the chiral SU(3) coupled-channel framework. We discuss several realistic chiral SU(3)-based models in comparison to reach conclusions about the uncertainties involved. It turns out that, in the region relevant to the discussion of deeply bound K-nuclear few-body systems, the resulting energy-dependent, equivalent local potential is substantially less attractive than the one suggested in previous purely phenomenological treatments.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/9f85b21e7ca23157b993b2bf05c9f99c1e0d3a8e

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Citations in the corpus

• Strangeness in nuclei and neutron stars (2020, background): “The nature of this baryonic resonant state has been analyzed experimentally in photon-, pion-, kaon-induced reactions as well as proton-proton collisions, in particular after the emergence of theoretical predictions describing this state as the superposition of two poles [7–9].”