{"paper":{"title":"Anomalous behavior of the first excited 0$^{+}$ state in $N \\approx Z$ nuclei","license":"","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"E. A. McCutchan, Jing-ye Zhang, K. Kaneko, M. Hasegawa, N. V. Zamfir, R. F. Casten, R. Kr\\\"ucken, T. Mizusaki","submitted_at":"2005-01-20T17:41:32Z","abstract_excerpt":"A study of the energies of the first excited $0^+$ states in all even-even $Z$ $\\geq$ 8 nuclei reveals an anomalous behavior in some nuclei with $N$ = $Z$, $Z$ $\\pm$ 2. We analyze these irregularities in the framework of the shell model. It is shown that proton-neutron correlations play an important role in this phenomenon."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-th/0501048","kind":"arxiv","version":1},"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"}