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Constraints on Σ Nucleus Dynamics from Dirac Phenomenology of Σ- Atoms

J. Mares, E. Friedman, A. Gal, B. K. Jennings

nucl-tharXiv:nucl-th/9505003

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.

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