{"paper":{"title":"Compton Scattering on 4He with Nuclear One- and Two-Body Densities","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["nucl-ex"],"primary_cat":"nucl-th","authors_text":"Andreas Nogga (FZ J\\\"ulich), Daniel R. Phillips (Ohio U.), Harald W. Griesshammer (George Washington U.), Judith A. McGovern (U. of Manchester), Junjie Liao (George Washington U.)","submitted_at":"2024-01-30T13:25:54Z","abstract_excerpt":"We present the first \\emph{ab initio} calculation of elastic Compton scattering from 4He. It is carried out to $\\mathcal{O}(e^2 \\delta^3)$ [N3LO] in the $\\delta$ expansion of $\\chi$EFT. At this order and for this target, the only free parameters are the scalar-isoscalar electric and magnetic dipole polarisabilities of the nucleon. Adopting current values for these yields a parameter-free prediction. This compares favourably with the world data from HI$\\gamma$S, Illinois and Lund for photon energies $50\\;\\mathrm{MeV}\\lesssim\\omega\\lesssim120\\;\\mathrm{MeV}$ within our theoretical uncertainties o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2401.16995","kind":"arxiv","version":2},"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/2401.16995/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"}