Abstract.
The analyses of (K-,π) and (π-, K+) reactions indicate that the nuclear potential of the Σ-hyperon is repulsive inside the nucleus, in agreement with the prediction of model F of the Nijmegen baryon-baryon interaction. This is consistent with the recent calculation of the strong-interaction shifts and widths of the observed levels of Σ- atoms, including the precise data on the Σ-Pb atom. In this paper, the sensitivity of this calculation to the neutron and proton density distributions is used to determine these densities in 208Pb.
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Dabrowski, J., Rożynek, J. Σatomic states and the nucleon distribution in Pb. Eur. Phys. J. A 25, 137–140 (2005). https://doi.org/10.1140/epja/i2005-10035-1
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DOI: https://doi.org/10.1140/epja/i2005-10035-1