{"paper":{"title":"A Cautionary Tale: The Coulomb Modified ANC for the $\\mathbf{1/2^+_2}$ State in $^\\mathbf{17}$O","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"nucl-ex","authors_text":"K. Rusek, K.W. Kemper, N. Keeley","submitted_at":"2018-05-23T12:15:47Z","abstract_excerpt":"We discuss the impact of the uncertainty ($\\pm 8$ keV) in the excitation energy of the astrophysically important 6.356 MeV $1/2^+_2$ state of $^{17}$O on the precision with which the Coulomb reduced ANC ($\\widetilde{C}$) for the $\\left<^{17}\\mathrm{O}(1/2^+_2) \\mid \\protect{^{13}\\mathrm{C}} + \\alpha \\right>$ overlap can be extracted from direct reaction data. We find a linear dependence of $\\widetilde{C}^2$ on the binding energy, the value extracted varying by a factor of 4 over the range $E_{\\mathrm{ex}} = 6.356$ -- $6.348$ MeV. This represents an intrinsic limit on the precision with which $"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.09083","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"}