{"paper":{"title":"Search for post-inflationary QCD axions with a quantum-limited tunable microwave receiver","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"Alessandro D'Elia, Alessio Rettaroli, Antonello Ortolan, Antonios Gardikiotis, Arpit Ranadive, Augusto Lombardi, Carlo Ligi, Caterina Braggio, Claudio Gatti, Daniele Di Gioacchino, David Alesini, Domenico D'Agostino, Dora Maiello, Giordano Lilli, Giosu\\`e Sardo Infirri, Giovanni Carugno, Giovanni Maccarrone, Giulio Cappelli, Giuseppe Ruoso, Martina Esposito, Nicolas Roch, Paolo Falferi, Raffaele Di Vora, Simone Tocci, Umberto Gambardella","submitted_at":"2025-06-13T08:55:28Z","abstract_excerpt":"A search for cosmological axions has been performed by scanning a frequency region of $38\\,$MHz centered at about $10.2\\,$GHz, corresponding to an axion mass $m_a \\simeq 42\\,\\mu$eV. The QUAX experimental apparatus, a haloscope comprised of a 1-liter volume tunable cavity immersed in an $8\\,$T magnetic field and a quantum-limited detection chain, set limits on the axion-photon coupling at the $10^{-14}\\,$GeV$^{-1}$ level. As no signal candidate has been observed, viable hadronic axion models are ruled out in a currently preferred post-inflationary region $m_a > 40\\,\\mu$eV."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2506.11589","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/2506.11589/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"}