Σatomic states and the nucleon distribution in Pb
Theoretical Division, Sołtan Institute for Nuclear Studies, Hoza 69, Pl-00-681, Warsaw, Poland
Accepted: 27 April 2005
Published online: 31 May 2005
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.
PACS: 13.75.Ev Hyperon-nucleon interactions – / 36.10.Gv Mesonic atoms and molecules, hyperonic atoms and molecules –
© Società Italiana di Fisica and Springer-Verlag, 2005