Constraints on $Σ$ Nucleus Dynamics from Dirac Phenomenology of $Σ^-$ Atoms
arXiv:nucl-th/9505003 · doi:10.1016/0375-9474(95)00358-8
Abstract
Strong interaction level shifts and widths in $Σ^-$ atoms are analyzed by using a $Σ$ nucleus optical potential constructed within the relativistic mean field approach. The analysis leads to potentials with a repulsive real part in the nuclear interior. The data are sufficient to establish the size of the isovector meson--hyperon coupling. Implications to $Σ$ hypernuclei are discussed.
18 pages, RevTex, 4 uuencoded figures, subm. Nucl.Phys.A