{"paper":{"title":"Scaling approach to rigid and soft nuclear deformation through flow fluctuations in high-energy nuclear collisions","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["nucl-ex"],"primary_cat":"nucl-th","authors_text":"Chunjian Zhang, Jiangyong Jia, Jinhui Chen, Lumeng Liu, Xu-Guang Huang, Yu-Gang Ma","submitted_at":"2025-09-11T11:51:40Z","abstract_excerpt":"The nature of octupole deformation, whether static or vibrational, remains an open question in nuclear physics. Here, we propose a scaling approach to probe this ambiguity by triangular flow fluctuations using multi-particle cumulants, $c_{3,\\varepsilon}\\{4\\}$, in relativistic $^{238}$U+$^{238}$U collisions. We demonstrate that both $|c_{3,\\varepsilon}\\{4\\}|$ and the ratio $|c_{3,\\varepsilon}\\{4\\}/c^2_{3,\\varepsilon}\\{2\\}|$ scale linearly with the fourth-order moment of octupole deformation, $\\langle \\beta^4_{3,\\mathrm{U}} \\rangle$. Combined with the known linear relation of $c_{3,\\varepsilon}"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2509.09376","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/2509.09376/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"}