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The Lamda-N - Sigma-N Interaction with Isobar Coupling and Six-Quark Resonances

W. R. Greenberg·E. L. Lomon
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Abstract

The long-range $ΛN-ΣN$ interaction is modeled by a configuration space meson-exchange potential matrix coupling to channels with $Δ$ and $Σ(1385)$ isobars. An inner boundary condition, based on $R$-matrix theory, replaces form factors for short-range effects and includes the effects of free quark configurations. An excellent fit is obtained to the available data, with only the energy-independent boundary conditions as free parameters. The effect of isobar thresholds is shown to be substantial in several partial waves and is crucial to the understanding of the higher energy $ΛN$ elastic scattering data.

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W. R. Greenberg, E. L. Lomon. 1992-12-10. The Lamda-N - Sigma-N Interaction with Isobar Coupling and Six-Quark Resonances. https://doi.org/10.1103/physrevd.47.2703

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