{"paper":{"title":"\\eta- and \\eta'-mesic nuclei and U_A(1) anomaly at finite density","license":"","headline":"","cross_cats":["hep-ph"],"primary_cat":"nucl-th","authors_text":"Hideko Nagahiro, Makoto Takizawa, Satoru Hirenzaki","submitted_at":"2006-06-26T06:56:33Z","abstract_excerpt":"We discuss theoretically the possibility of observing the bound states of the \\eta and \\eta'(958) mesons in nuclei. We apply the NJL model to study the \\eta and \\eta' meson properties at finite density and calculate the formation cross sections of the \\eta and \\eta' bound states with the Green function method for (\\gamma,p) reaction. We also discuss the experimental feasibility at photon facilities like SPring-8. The contributions due to the \\omega meson production are also included to obtain the realistic (\\gamma,p) spectra. We conclude that we can expect to observe resonance peaks in (\\gamma"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-th/0606052","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/nucl-th/0606052/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}