{"paper":{"title":"First observation of a nuclear $s$-state of $\\Xi$ hypernucleus, $^{15}_{\\Xi}{\\rm C}$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-th","physics.ins-det"],"primary_cat":"nucl-ex","authors_text":"A. Kasagi, A. M. M. Theint, A. N. L. Nyaw, A. T. Moe, B. Bassalleck, C. S. Yoon, D. H. Zhang, H. Ekawa, H. Kanauchi, H. Sako, H. Takahashi, H. Tamura, J. K. Ahn, J. Pochodzalla, J. Yoshida, J. Y. Sohn, K. Hicks, K. Hoshino, K. Imai, K. Miwa, K. Nakazawa, K. Tanida, K. T. Tint, M. Fujita, M. Ichikawa, M. K. Soe, M. M. Soe, M. Naruki, M. Ukai, M. Yoshimoto, P. M. Lin, S. B. Yang, S. H. Hayakawa, S. H. Hwang, S. H. Kim, S. Hoshino, S. Kinbara, S. Sato, T. Hashimoto, T. L. Ma, T. Nanamura, T. O. Yamamoto, T. Takahashi, Y. Endo, Y. Han, Y. Ichikawa, Y. Ishikawa, Y. Nagase, Z. Zhang","submitted_at":"2021-03-16T01:21:06Z","abstract_excerpt":"Bound-systems of $\\Xi^-$--$^{14}_{}{\\rm N}$ are studied via $\\Xi^-$ capture at rest followed by emission of a twin single-$\\Lambda$ hypernucleus in the emulsion detectors. Two events forming extremely deep $\\Xi^-$ bound states were obtained by analysis of a hybrid method in the E07 experiment at J-PARC and reanalysis of the E373 experiment at KEK-PS. The decay mode of one event was assigned as $\\Xi^-+^{14}_{}{\\rm N}\\to^{5}_{\\Lambda}{\\rm He}$+$^{5}_{\\Lambda}{\\rm He}$+$^{4}_{}{\\rm He}$+n. Since there are no excited states for daughter particles, the binding energy of the $\\Xi^-$ hyperon, $B_{\\Xi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2103.08793","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/2103.08793/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"}