Abstract
Single-particle energies and widths of Σ hypernuclear states are calculated in light systems (A ≤ 40) as energy eigenvalues of the Schrödinger equation for a complex optical potential that fits level shifts and widths of Σ- atoms. The interpretation and significance of Σ (normalizable) bound states embedded in the Λ hypernuclear (as well as, sometimes, in the Σ hypernuclear) continuum are discussed and their properties are studied, primarily in order to identify relatively narrow (Γ ≲ 10 MeV) states. The connection between these calculations and the recently observed Σ hypernuclear states suggests that bound states embedded in the Σ continuum, rather than (nonnormalizable) Gamow resonant states, are produced in (K-, π) nuclear reactions.
Original language | English |
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Pages (from-to) | 341-377 |
Number of pages | 37 |
Journal | Annals of Physics |
Volume | 137 |
Issue number | 2 |
DOIs | |
State | Published - Dec 1981 |
Externally published | Yes |