{"paper":{"title":"Possible $\\eta' d$ bound state and its $s$-channel formation in the $\\gamma d \\to \\eta d$ reaction","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex","hep-ph","nucl-ex"],"primary_cat":"nucl-th","authors_text":"Hiroyuki Fujioka (Kyoto U.), Ibaraki), Takatsugu Ishikawa (ELPH, Takayasu Sekihara (JAEA, Tohoku Univ.)","submitted_at":"2017-12-18T05:51:22Z","abstract_excerpt":"We theoretically investigate a possibility of an $\\eta ^{\\prime} d$ bound state and its formation in the $\\gamma d \\to \\eta d$ reaction. First, in the fixed center approximation to the Faddeev equations we obtain an $\\eta ^{\\prime} d$ bound state with a binding energy of 25 MeV and width of 19 MeV, where we take the $\\eta ^{\\prime} N$ interaction with a coupling to the $\\eta N$ channel from the linear $\\sigma$ model. Then, in order to investigate the feasibility from an experimental point of view, we calculate the cross section of the $\\gamma d \\to \\eta d$ reaction at the photon energy in the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.06257","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":""},"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"}