{"paper":{"title":"Benchmarking $^{136}$Xe Neutrinoless $\\beta\\beta$ Decay Matrix Element Calculations with the $^{138}{\\rm Ba}(p,t)$ Reaction","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"nucl-ex","authors_text":"A. Diaz Varela, B. A. Brown, B. Jigmeddorj, B. M. Rebeiro, C. Burbadge, D. L. Fang, G. C. Ball, H. -F. Wirth, J. C. Nzobadila Ondze, J. N. Orce, K. G. Leach, M. Horoi, M. Kamil, P. Adsley, P. E. Garrett, P. Z. Mabika, R. Hertenberger, R. Lindsay, S. Triambak, T. Faestermann, V. Bildstein","submitted_at":"2020-02-07T19:20:51Z","abstract_excerpt":"We used a high-resolution magnetic spectrograph to study neutron pair-correlated $0^+$ states in $^{136}$Ba, produced via the $^{138}{\\rm Ba}(p,t)$ reaction. In conjunction with state-of-the-art shell model calculations, these data benchmark part of the dominant Gamow-Teller component of the nuclear matrix element (NME) for $^{136}$Xe neutrinoless double beta ($0\\nu\\beta\\beta$) decay. We demonstrate for the first time an evaluation of part of a $0\\nu\\beta\\beta$ decay NME by use of an experimental observable, presenting a new avenue of approach for more accurate calculations of $0\\nu\\beta\\beta$"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2002.02987","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/2002.02987/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"}