{"paper":{"title":"$2\\alpha+t$ cluster structure in $^{11}$B","license":"","headline":"","cross_cats":["nucl-th"],"primary_cat":"nucl-ex","authors_text":"A. Tamii, H. Akimune, H. Fujita, H. P. Yoshida, H. Sakaguchi, K. Hara, K. Hatanaka, K. Nakanishi, M. Fujiwara, M. Itoh, M. Uchida, M. Yosoi, S. Kishi, S. Terashima, T. Kawabata, T. Wakasa, Y. Fujita, Y. Kanada-En'yo, Y. Shimbara, Y. Yasuda","submitted_at":"2005-12-25T10:45:22Z","abstract_excerpt":"The cluster structures of the excited states in $^{11}$B are studied by analyzing the isoscalar monopole and quadrupole strengths in the $^{11}$B($d$,$d'$) reaction at $E_d=200$ MeV. The excitation strengths are compared with the predictions by the shell-model and antisymmetrized molecular-dynamics (AMD) calculations. It is found that the large monopole strength for the $3/2^-_3$ state at $E_x=8.56$ MeV is well described by the AMD calculation and is an evidence for a developed $2\\alpha+t$ cluster structure."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-ex/0512040","kind":"arxiv","version":5},"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"}