{"paper":{"title":"Excitation Spectra of the ${}^{12}{\\rm C}(p,d)$ Reaction near the $\\eta'$-Meson Emission Threshold Measured in Coincidence with High-Momentum Protons","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"nucl-ex","authors_text":"A. Gra\\~na Gonz\\'alez, A. Kasagi, A. Khreptak, A. Yamamoto, A. Yanai, B. Kindler, B. Lommel, B. Streicher, B. Szczepanczyk, C. Hornung, C. Nociforo, C. Rappold, C. Scheidenberger, D. J. Morrissey, D. Kostyleva, E. Haettner, E. Kazantseva, E. Liu, E. Rocco, F. Amjad, F. Goldenbaum, H. Alibrahim Alfaki, H. Ekawa, H. Fujioka, H. Geissel, H. Heggen, H. J. Ong, H. Kollmus, H. Weick, I. Mukha, J. Benlliure, J. L. Rodr\\'iguez-S\\'anchez, J. Yamagata-Sekihara, J. Zhao, K.-H. Behr, K. Itahashi, K. Suzuki, K. Wimmer, M. Armstrong, M. Feijoo-Font\\'an, M. Iwasaki, M. Kavatsyuk, M. Nakagawa, M. Nanova, M. N. Harakeh, M. Skurzok, M. Vencelj, M. Will, N. Hubbard, N. Ikeno, N. Kalantar-Nayestanaki, N. Kurz, N. Tortorelli, P. Moskal, P. Roy, P. Schwarz, R. Ruber, R. Sekiya, S. Dubey, S. Escrig, S. Hirenzaki, S. Kraft-Bermuth, S. Minami, S. Pietri, S. Purushothaman, S. Schadmand, T. Dickel, T. R. Saito, T. Weber, V. Drozd, V. Metag, V. Serdyuk, X. Tang, Y. Gao, Y. He, Y. K. Tanaka, Z. Brencic","submitted_at":"2025-09-09T15:00:19Z","abstract_excerpt":"The missing mass of the ${}^{12}{\\rm C}(p,d)$ reaction has been measured near the $\\eta'$-meson emission threshold in coincidence with a high-momentum proton to selectively collect $\\eta'$-${}^{11}{\\rm C}$ mesic nucleus formation events at GSI, Germany. A 2.5 GeV proton excites a carbon nucleus to form an $\\eta'$-mesic nucleus emitting a deuteron forward with an energy of $\\sim 1.6$ GeV. The deuteron is momentum-analyzed by the Fragment Separator used as a high-resolution spectrometer to deduce the excitation energy of the residual system. The large-acceptance detector WASA surrounding the tar"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2509.07824","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2509.07824/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"}