{"paper":{"title":"$^{57}$Zn $\\beta$-delayed proton emission establishes the $^{56}$Ni $rp$-process waiting point bypass","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.HE","astro-ph.SR"],"primary_cat":"nucl-ex","authors_text":"A. Chester, A. Estrade, A. L. Richard, A. S. Tamashiro, B. Longfellow, B. P. Crider, C. J. Chiara, D. E. M. Hoff, D. Soltesz, F. Montes, G. Hamad, H. Jayatissa, H. Schatz, I. Sultana, J. Derkin, J. J. Carroll, J. T. Harke, M. Mogannam, M. P. Carpenter, M. Saxena, N. Nepal, N. Smirnova, P. A. Copp, P. C. Bender, R. Conaway, R. Jain, R. Zink, S. K. Subedi, S. N. Liddick, S. P. Burcher, T. H. Ogunbeku, V. Tripathi, W.-J Ong, Y. Xiaog, Z. Meisel","submitted_at":"2022-04-04T16:11:57Z","abstract_excerpt":"We measured the $^{57}$Zn $\\beta$-delayed proton ($\\beta$p) and $\\gamma$ emission at the National Superconducting Cyclotron Laboratory. We find a $^{57}$Zn half-life of 43.6 $\\pm$ 0.2 ms, $\\beta$p branching ratio of (84.7 $\\pm$ 1.4)%, and identify four transitions corresponding to the exotic $\\beta$-$\\gamma$-$p$ decay mode, the second such identification in the $f p$-shell. The $p/\\gamma$ ratio was used to correct for isospin mixing while determining the $^{57}$Zn mass via the isobaric multiplet mass equation. Previously, it was uncertain as to whether the rp-process flow could bypass the text"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2204.01621","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/2204.01621/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"}