{"paper":{"title":"Single-neutron knockout from $^{20}\\textrm{C}$ and the structure of $^{19}\\textrm{C}$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"nucl-ex","authors_text":"A.G. Tuff, A. Navin, D. Kameda, D. Kanno, D. Murai, F. Delaunay, F.M. Marqu\\'es, H. Baba, H. Otsu, H. Sato, H. Suzuki, H. Takeda, J. Gibelin, J. Lee, J.W. Hwang, K. Muto, K. Takahashi, K. Yoneda, M. Vandebrouck, N.A. Orr, N. Fukuda, N. Inabe, N. Kobayashi, N.L. Achouri, N. Nakatsuka, P. Doornenbal, R. Minakata, R. Tanaka, S. Kim, S. Leblond, S. Nishi, S. Ogoshi, S. Takeuchi, T. Aumann, T. Isobe, T. Kobayashi, T. Kubo, T. Motobayashi, T. Murakami, T. Nakamura, T. Nakashima, Y. Kondo, Y. Satou, Y. Shimizu, Y. Togano","submitted_at":"2017-04-12T02:44:21Z","abstract_excerpt":"The low-lying unbound level structure of the halo nucleus $^{19}\\textrm{C}$ has been investigated using single-neutron knockout from $^{20}\\textrm{C}$ on a carbon target at 280 MeV/nucleon. The invariant mass spectrum, derived from the momenta of the forward going beam velocity $^{18}\\textrm{C}$ fragment and neutrons, was found to be dominated by a very narrow near threshold ($E_\\textrm{rel}$ = 0.036(1) MeV) peak. Two less strongly populated resonance-like features were also observed at $E_\\textrm{rel}$ = 0.84(4) and 2.31(3) MeV, both of which exhibit characteristics consistent with neutron $p"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.03601","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"}