{"paper":{"title":"Evidence of a near-threshold resonance in $^{11}$B relevant to the $\\beta$-delayed proton emission of $^{11}$Be","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"B. Fern\\'andez-Dom\\'inguez, B. Monteagudo, B. Olaizola, B. P. Kay, C. Santamaria, D. Bazin, D. Schumann, E. A. Maugeri, E. Rubino, F. Ndayisabye, G. Potel, H. Alvarez-Pol, J. Chen, J. C. Zamora, J. Pereira, J. Surbrook, L. Wagner, M. Caama\\~no, M. Cortesi, N. Rijal, N. Watwood, P. Gueye, R. Jain, S. Giraud, S. Heinitz, S. N. Paneru, T. Tang, V. Zelevinsky, W. Mittig, Y. Ayyad","submitted_at":"2022-05-10T15:31:23Z","abstract_excerpt":"A narrow near-threshold proton-emitting resonance (Ex = 11.4 MeV, J$^{\\pi}$ = 1/2$^{+}$ and $\\Gamma_{p}$ = 4.4 keV) was directly observed in $^{11}$B via proton resonance scattering. This resonance was previously inferred in the $\\beta$-delayed proton emission of the neutron halo nucleus $^{11}$Be. The good agreement between both experimental results serves as a ground to confirm the existence of such exotic decay and the particular behavior of weakly bound nuclei coupled to the continuum. $R$-matrix analysis shows a sizable partial decay width for both, proton and $\\alpha$ emission channels."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2205.04973","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/2205.04973/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"}