{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2014:GDJBTBM3EINVZRDOO5BS22YUNC","short_pith_number":"pith:GDJBTBM3","schema_version":"1.0","canonical_sha256":"30d219859b221b5cc46e77432d6b146888d598e3725bfc41279affa925062b9e","source":{"kind":"arxiv","id":"1404.5502","version":1},"attestation_state":"computed","paper":{"title":"Search for light massive gauge bosons as an explanation of the $(g-2)_\\mu$ anomaly at MAMI","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-ex"],"primary_cat":"hep-ex","authors_text":"A. Denig, A. Esser, A. Tyukin, A. Weber, B. S. Schlimme, C. Ayerbe Gayoso, C. Sfienti, D. Bosnar, D. G. Middleton, F. Schulz, G. Ron, H. Fonvieille, H. Merkel, I. Fri\\v{s}\\v{c}i\\'c, J. Beri\\v{c}i\\v{c}, J. C. Bernauer, J. Pochodzalla, L. Correa, L. Debenjak, L. Nungesser, M. G\\'omez Rodr\\'iguez de la Paz, M. Hoek, M. Mihovilovi\\v{c}, M. O. Distler, M. Rohrbeck, M. Schoth, M. Thiel, M. Weinriefer, P. Achenbach, R. B\\\"ohm, S. Kegel, S. S\\'anchez Majos, S. \\v{S}irca, T. Beranek, U. M\\\"uller, Y. Kohl","submitted_at":"2014-04-22T14:01:28Z","abstract_excerpt":"A massive, but light abelian U(1) gauge boson is a well motivated possible signature of physics beyond the Standard Model of particle physics. In this paper, the search for the signal of such a U(1) gauge boson in electron-positron pair-production at the spectrometer setup of the A1 Collaboration at the Mainz Microtron (MAMI) is described. Exclusion limits in the mass range of 40 MeV up to 300 MeV with a sensitivity in the mixing parameter of down to $\\epsilon^2 = 8\\times 10^{-7}$ are presented. A large fraction of the parameter space has been excluded where the discrepancy of the measured ano"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1404.5502","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2014-04-22T14:01:28Z","cross_cats_sorted":["nucl-ex"],"title_canon_sha256":"bb4f63880aad2a5adef41cfb6c5b20fe27752161ee0ade5092148917c3a5e397","abstract_canon_sha256":"ad548663b861e979eb6c254284ac2757fa7ac89274c26042de7498421eecfe19"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:48:09.318996Z","signature_b64":"vMI4KY+wRYSxsPSCuOS1XVE8TmaLA8TuXUJYGmwQRJxgrLxqMgsp2FLJpeYQGapkVXelzqDIXOFaaEtkn8o1AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"30d219859b221b5cc46e77432d6b146888d598e3725bfc41279affa925062b9e","last_reissued_at":"2026-05-18T02:48:09.318543Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:48:09.318543Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Search for light massive gauge bosons as an explanation of the $(g-2)_\\mu$ anomaly at MAMI","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-ex"],"primary_cat":"hep-ex","authors_text":"A. Denig, A. Esser, A. Tyukin, A. Weber, B. S. Schlimme, C. Ayerbe Gayoso, C. Sfienti, D. Bosnar, D. G. Middleton, F. Schulz, G. Ron, H. Fonvieille, H. Merkel, I. Fri\\v{s}\\v{c}i\\'c, J. Beri\\v{c}i\\v{c}, J. C. Bernauer, J. Pochodzalla, L. Correa, L. Debenjak, L. Nungesser, M. G\\'omez Rodr\\'iguez de la Paz, M. Hoek, M. Mihovilovi\\v{c}, M. O. Distler, M. Rohrbeck, M. Schoth, M. Thiel, M. Weinriefer, P. Achenbach, R. B\\\"ohm, S. Kegel, S. S\\'anchez Majos, S. \\v{S}irca, T. Beranek, U. M\\\"uller, Y. Kohl","submitted_at":"2014-04-22T14:01:28Z","abstract_excerpt":"A massive, but light abelian U(1) gauge boson is a well motivated possible signature of physics beyond the Standard Model of particle physics. In this paper, the search for the signal of such a U(1) gauge boson in electron-positron pair-production at the spectrometer setup of the A1 Collaboration at the Mainz Microtron (MAMI) is described. Exclusion limits in the mass range of 40 MeV up to 300 MeV with a sensitivity in the mixing parameter of down to $\\epsilon^2 = 8\\times 10^{-7}$ are presented. A large fraction of the parameter space has been excluded where the discrepancy of the measured ano"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1404.5502","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":""},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1404.5502","created_at":"2026-05-18T02:48:09.318598+00:00"},{"alias_kind":"arxiv_version","alias_value":"1404.5502v1","created_at":"2026-05-18T02:48:09.318598+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1404.5502","created_at":"2026-05-18T02:48:09.318598+00:00"},{"alias_kind":"pith_short_12","alias_value":"GDJBTBM3EINV","created_at":"2026-05-18T12:28:30.664211+00:00"},{"alias_kind":"pith_short_16","alias_value":"GDJBTBM3EINVZRDO","created_at":"2026-05-18T12:28:30.664211+00:00"},{"alias_kind":"pith_short_8","alias_value":"GDJBTBM3","created_at":"2026-05-18T12:28:30.664211+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2005.01515","citing_title":"The Dark Photon","ref_index":179,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/GDJBTBM3EINVZRDOO5BS22YUNC","json":"https://pith.science/pith/GDJBTBM3EINVZRDOO5BS22YUNC.json","graph_json":"https://pith.science/api/pith-number/GDJBTBM3EINVZRDOO5BS22YUNC/graph.json","events_json":"https://pith.science/api/pith-number/GDJBTBM3EINVZRDOO5BS22YUNC/events.json","paper":"https://pith.science/paper/GDJBTBM3"},"agent_actions":{"view_html":"https://pith.science/pith/GDJBTBM3EINVZRDOO5BS22YUNC","download_json":"https://pith.science/pith/GDJBTBM3EINVZRDOO5BS22YUNC.json","view_paper":"https://pith.science/paper/GDJBTBM3","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1404.5502&json=true","fetch_graph":"https://pith.science/api/pith-number/GDJBTBM3EINVZRDOO5BS22YUNC/graph.json","fetch_events":"https://pith.science/api/pith-number/GDJBTBM3EINVZRDOO5BS22YUNC/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/GDJBTBM3EINVZRDOO5BS22YUNC/action/timestamp_anchor","attest_storage":"https://pith.science/pith/GDJBTBM3EINVZRDOO5BS22YUNC/action/storage_attestation","attest_author":"https://pith.science/pith/GDJBTBM3EINVZRDOO5BS22YUNC/action/author_attestation","sign_citation":"https://pith.science/pith/GDJBTBM3EINVZRDOO5BS22YUNC/action/citation_signature","submit_replication":"https://pith.science/pith/GDJBTBM3EINVZRDOO5BS22YUNC/action/replication_record"}},"created_at":"2026-05-18T02:48:09.318598+00:00","updated_at":"2026-05-18T02:48:09.318598+00:00"}