QCD Symmetries in $\eta $- and $\eta '$-Mesic Nuclei
نویسندگان
چکیده
منابع مشابه
Production and Decay of Eta-mesic Nuclei
Using the Green function method, binding effects on produced η-mesons in the two-stage reaction γ + A → N + η + (A − 1) → N + (πN) + (A − 2) are studied. The energy spectrum of the correlated πN pairs which arise from decays of η’s inside the nucleus is strongly affected by an attractive η-nucleus optical potential. Its resonant behavior gives a clear signal of formating intermediate η-mesic nu...
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The prominent feature of the η meson is that it couples dominantly to the N(1535) (S11) resonance at threshold energies. The low-momentum η meson would then mainly excite N–nucleon-hole (N-h) states in nuclear matter. Therefore the η meson nuclear dynamics is sensitive to modifications of nucleon and N properties in medium. If some medium effects and/or a density increase bring the N-h state do...
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ژورنال
عنوان ژورنال: Acta Physica Polonica B
سال: 2014
ISSN: 0587-4254,1509-5770
DOI: 10.5506/aphyspolb.45.627