Eta-meson light nucleus scattering and Charge Symmetry Breaking

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dc.creatorSofianos, S. A.
dc.creatorRakityansky, S. A.
dc.creatorBraun, M.
dc.date1997-04-14
dc.date.accessioned2026-07-07T05:41:58Z
dc.date.available2026-07-07T05:41:58Z
dc.descriptionThe η-meson collision with light nuclei, ^2H, ^3H, ^3He, and ^4He, is considered on the basis of a microscopic approach which utilises Faddeev type and Lippmann-Schwinger equations. The nuclear hamiltonian is approximated by the finite rank approximation which amounts to the coherent approximation. The η-nucleus scattering length and the resonance and bound--state poles of the amplitude describing elastic scattering of η-meson by these nuclei are obtained. For each of the nuclei considered, the minimal factor enhancing the ηN--attraction that moves the poles to the quasi--bound state area of the complex k--plane, is determined. It is shown that within the existing uncertainties in the elementary ηN iteraction all these nuclei can support a quasi--bound state which can result in a formation of an eta-mesic nucleus. Various aspects of the eta-nucleus physics are discussed with specific emphasis given to the η--nucleus effective interaction in configuration space (constructed via the Marchenko inverse scattering method), to the Okubo--Zweig--Iizuka (OZI) rule, and to the charge symmetry breaking problem.
dc.description6 pages, latex, no PS-figures, Talk given at the International Workshop on Exciting Physics with New Accelerators Facilities (EXPAF97), SPring8, Aioi, Japan, March 11-13, 1997
dc.identifierhttps://arxiv.org/abs/nucl-th/9704026
dc.identifierhttp://arxiv.org/abs/nucl-th/9704026
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/82765
dc.subjectNuclear Theory
dc.titleEta-meson light nucleus scattering and Charge Symmetry Breaking
dc.typetext

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