{"paper":{"title":"Resonance-like structure near the $\\eta d$ threshold in the $\\gamma{d}${$\\to$}$\\pi^0\\eta{d}$ reaction","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A. Kawano, A. Nakamura, F. Miyahara, H. Fujimura, H. Fukasawa, H. Shimizu, H. Sugai, H. Yamazaki, H.Y. Yoshida, J. Kasagi, K. Maeda, K. Mochizuki, K. Nawa, K. Okamura, K. Ozawa, K. Suzuki, M. Miyabe, M. Sato, N. Muramatsu, Q. He, R. Hashimoto, R. Yamazaki, S. Kaida, S. Kuwasaki, S. Masumoto, S. Ogushi, S. Takahashi, T. Ishikawa, T. Iwata, Y. Honda, Y. Obara, Y. Okada, Y. Onodera, Y. Sakamoto, Y. Tajima, Y. Taniguchi, Y. Tsuchikawa","submitted_at":"2021-05-23T08:44:37Z","abstract_excerpt":"To investigate the interaction between the nucleon $N$ and nucleon resonance $N(1535)1/2^-$, the $\\eta d$ threshold structure connected to the isoscalar $S$-wave $N$-$N(1535)1/2^-$ system has been experimentally studied in the $\\gamma{d}${$\\to$}$\\pi^0\\eta{d}$ reaction at incident photon energies ranging from the reaction threshold to 1.15 GeV. A strong enhancement is observed near the $\\eta d$ threshold over the three-body phase-space contribution in the $\\eta d$ invariant-mass distribution. An analysis incorporating the known isovector resonance $\\mathcal{D}_{12}$ with a spin-parity of $2^+$ "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2105.10887","kind":"arxiv","version":3},"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/2105.10887/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"}