Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: $\bar K$ nuclear bound states in a dynamical model   A comprehensive data base of K- atom level shifts and widths is re-analyzed
in order to study the density dependence of the Kbar-nuclear optical potential.
Significant departure from a t*rho form is found only for nuclear densities
about and less than 20% of nuclear-matter density, and extrapolation to
nuclear-matter density yields an attractive potential, about 170 MeV deep.
Partial restoration of chiral symmetry compatible with pionic atoms and
low-energy pion-nuclear data plays no role at the relevant low-density regime,
but this effect is not ruled out at high densities. Kbar-nuclear bound states
are generated across the periodic table self consistently, using a relativistic
mean-field model Lagrangian which couples the Kbar to the scalar and vector
meson fields mediating the nuclear interactions. The reduced phase space
available for Kbar absorption from these bound states is taken into account by
adding an energy-dependent imaginary term which underlies the corresponding
Kbar-nuclear level widths, with a strength required by fits to the atomic data.
Substantial polarization of the core nucleus is found for light nuclei, and the
binding energies and widths calculated in this dynamical model differ
appreciably from those calculated for a static nucleus. A wide range of binding
energies is spanned by varying the Kbar couplings to the meson fields. Our
calculations provide a lower limit of Gamma(Kbar) = 50 +/- 10 MeV on the width
of nuclear bound states for Kbar binding energy in the range B(Kbar) = 100 -
200 MeV. Comments are made on the interpretation of the FINUDA experiment at
DAFNE, Frascati, which claimed evidence for deeply bound (K- pp) states in
light nuclei.

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The categories of this paper are: hep-ph
4
The categories of this paper are: cond-mat
25
The categories of this paper are: patt-sol
34
The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con
13
The categories of this paper are: quant-ph
23
The categories of this paper are: solv-int
21
The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio