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$K^-$ - nucleus relativistic mean field potentials consistent with kaonic atoms

E. Friedman·A. Gal·J. Mares·A. Cieply
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Abstract

$K^-$ atomic data are used to test several models of the $K^-$ nucleus interaction. The t($ρ$)$ρ$ optical potential, due to coupled channel models incorporating the $Λ$(1405) dynamics, fails to reproduce these data. A standard relativistic mean field (RMF) potential, disregarding the $Λ$(1405) dynamics at low densities, also fails. The only successful model is a hybrid of a theoretically motivated RMF approach in the nuclear interior and a completely phenomenological density dependent potential, which respects the low density theorem in the nuclear surface region. This best-fit $K^-$ optical potential is found to be strongly attractive, with a depth of 180 \pm 20 MeV at the nuclear interior, in agreement with previous phenomenological analyses.

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E. Friedman, A. Gal, J. Mares, A. Cieply. 1999-05-27. $K^-$ - nucleus relativistic mean field potentials consistent with kaonic atoms. https://doi.org/10.1103/physrevc.60.024314

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