Chirally motivated K^- nuclear potentials
Abstract
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.
Cite
@article{arxiv.1102.4515,
title = {Chirally motivated K^- nuclear potentials},
author = {A. Cieplý and E. Friedman and A. Gal and D. Gazda and J. Mareš},
journal= {arXiv preprint arXiv:1102.4515},
year = {2015}
}
Comments
extended discussion, unchanged results and conclusions, accepted by PLB