Density dependence of the Σ nucleus optical potential derived from Σ- atom data

C. J. Batty*, E. Friedman, A. Gal

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

93 Scopus citations

Abstract

We study phenomenologically the density dependence of the Σ nucleus optical potential Vopt(r) at zero kinetic energy by fitting it to a comprehensive set of atomic data across the periodic table. The best fit solutions for Vopt depart considerably from a standard teffρ{variant}(r) form in that Re Vopt tends to flip sign from attraction outside the nucleus to repulsion in the surface region. However, the quality of the atomic data is too poor to determine unambiguously Vopt inside the nucleus. For such density dependent potentials, well defined single-particle hypernuclear states are unlikely to exist.

Original languageEnglish
Pages (from-to)273-278
Number of pages6
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume335
Issue number3-4
DOIs
StatePublished - 8 Sep 1994

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