Spin-orbit coupling in Σ-hypernuclei |
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Authors: | R. Brockmann |
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Affiliation: | Institute of Theoretical Physics, University of Regensburg, D-8400 Regensburg, West Germany |
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Abstract: | Single-particle energies of Σ-hyperons in Σ16O are calculated within a relativistic mean-field theory. This model predicts a small spin-orbit splitting for Σ-hyperons in Σ16O compared to ordinary nucleons in nuclei. Half of the small spin-orbit splitting is due to the anomalous magnetic moment of the Σ-hyperon. K and K1 exchange terms are negligible. This is to be seen in contrast to a previous quark-model prediction of a strong spin-orbit splitting for hyperons. |
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