{"paper":{"title":"A pathway to unveiling neutrinoless $\\beta\\beta$ decay nuclear matrix elements via $\\gamma\\gamma$ decay","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex","hep-ph","nucl-ex"],"primary_cat":"nucl-th","authors_text":"Beatriz Romeo, Damiano Stramaccioni, Javier Men\\'endez, Jose Javier Valiente-Dob\\'on","submitted_at":"2024-11-05T22:40:07Z","abstract_excerpt":"We investigate the experimental feasibility of detecting second-order double-magnetic dipole ($\\gamma\\gamma$-$M1M1$) decays from double isobaric analog states (DIAS), which have recently been found to be strongly correlated with the nuclear matrix elements of neutrinoless $\\beta\\beta$ decay. Using the nuclear shell model, we compute theoretical branching ratios for $\\gamma\\gamma$-$M1M1$ decays and compare them with other competing processes, such as single-$\\gamma$ decay and proton emission, which represent the dominant decay channels. We also estimate the potential competition from internal c"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2411.03539","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/2411.03539/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"}