Narrow Sigma -hypernuclear states

It is shown that the spin-isospin dependence of low-energy Sigma N to Lambda N conversion leads to substantial quenching of nuclear-matter estimates of the widths of some Sigma -hypernuclear states produced in (K/sup -/, pi ) reactions, to a level below 10 MeV. The estimated widths compare favorably...

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Detalles Bibliográficos
Autores principales: Gal, A, Dover, C B
Lenguaje:eng
Publicado: 1980
Materias:
Nuclear Physics
Acceso en línea:https://dx.doi.org/10.1103/PhysRevLett.44.379
http://cds.cern.ch/record/879382
Descripción
Sumario:It is shown that the spin-isospin dependence of low-energy Sigma N to Lambda N conversion leads to substantial quenching of nuclear-matter estimates of the widths of some Sigma -hypernuclear states produced in (K/sup -/, pi ) reactions, to a level below 10 MeV. The estimated widths compare favorably with those of the Sigma -hypernuclear peaks recently observed at CERN for /sup 7/Li, /sup 9/Be, and /sup 12/C. Tentative quantum number assignments are suggested for these states. (10 refs).

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