Chirally motivated K^- nuclear potentials

Details Chirally motivated K^- nuclear potentials Chirally motivated K^- nuclear potentials

2011-02-22

arxiv.org/abs/1102.4515v4

Phys. Lett. B 702 (2011) 402-407

Physics

Nuclear Physics

Nuclear Theory

extended discussion, unchanged results and conclusions, accepted by PLB

Scientific paper

In-medium subthreshold KbarN scattering amplitudes calculated within a chirally motivated meson-baryon coupled-channel model are used self consistently to confront K^- atom data across the periodic table. Substantially deeper K^- nuclear potentials are obtained compared to the shallow potentials derived in some approaches from threshold amplitudes, with Re V_{chiral} = -(85+/-5) MeV at nuclear matter density. When KbarNN contributions are incorporated phenomenologically, a very deep K^- nuclear potential results, Re V_{chiral+phen.} = -(180+/-5) MeV, in agreement with density dependent potentials obtained in purely phenomenological fits to the data. Self consistent dynamical calculations of K^- nuclear quasibound states are reported and discussed.

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