{"paper":{"title":"Missing-mass spectroscopy of the ${}^{12}{\\rm C}(p,d)$ reaction near the $\\eta^\\prime$-meson production threshold","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"nucl-ex","authors_text":"A. Prochazka, B. Sitar, B. Sun, C. Guo, C. Hornung, C. Rappold, C. Scheidenberger, D. Jido, E. Gutz, E. Haettner, E. Widmann, H. Fujioka, H. Geissel, H. J. Ong, H. Nagahiro, H. Simon, H. Weick, H. Yamakami, I. Mukha, I. Szarka, I. Tanihata, J. Benlliure, J. Gellanki, J. L. Rodr\\'iguez-S\\'anchez, J. S. Winfield, J. Zhao, K. Itahashi, K. Suzuki, K.-T. Brinkmann, M. Iwasaki, M. Nanova, M. N. Harakeh, M. P. Reiter, M. Takechi, N. Ikeno, N. Kalantar-Nayestanaki, N. Kurz, P. Strmen, R. Kanungo, R. Knoebel, R. S. Hayano, S. Friedrich, S. Hirenzaki, S. Pietri, S. Terashima, T. Nagae, T. Nishi, V. Metag, X. Xu, Y. Ayyad, Y. Higashi, Y. Igarashi, Y. K. Tanaka, Y. N. Watanabe","submitted_at":"2017-05-30T10:57:50Z","abstract_excerpt":"Excitation-energy spectra of $^{11}$C nuclei near the $\\eta^\\prime$-meson production threshold have been measured by missing-mass spectroscopy using the $^{12}$C($p$,$d$) reaction. A carbon target has been irradiated with a 2.5 GeV proton beam supplied by the synchrotron SIS-18 at GSI to produce $\\eta^\\prime$ meson bound states in $^{11}$C nuclei. Deuterons emitted at $0^\\circ$ in the reaction have been momentum-analyzed by the fragment separator (FRS) used as a high-resolution spectrometer. No distinct structure due to the formation of $\\eta^\\prime$-mesic states is observed although a high st"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.10543","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"}