{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2007:BDQ55NXVBIK5JFNA2EOI5YHEKT","short_pith_number":"pith:BDQ55NXV","schema_version":"1.0","canonical_sha256":"08e1deb6f50a15d495a0d11c8ee0e454f01a93bd4b1d6fe519a84182d7c8d3b8","source":{"kind":"arxiv","id":"0705.3816","version":1},"attestation_state":"computed","paper":{"title":"Separated cross sections in \\pi^0 electroproduction at threshold at Q^2 = 0.05 GeV^2/c^2","license":"","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A. Liesenfeld, A. M. Bernstein, A. Wagner, D. Baumann, G. Rosner, H. Merkel, H. Schmieden, I. Ewald, J. Bermuth, J. Friedrich, J. M. Friedrich, K. Bohinc, K. W. Krygier, M. Ding, M. Kahrau, M. Kohl, M. M. Pavan, M. O. Distler, M. Potokar, M. Seimetz, M. Weis, P. Bartsch, P. Merle, R. B\\\"ohm, R. Neuhausen, S. \\v{S}irca, Th. Pospischil, Th. Walcher, U. M\\\"uller","submitted_at":"2007-05-25T17:37:31Z","abstract_excerpt":"The differential cross sections \\sigma_0=\\sigma_T+\\epsilon \\sigma_L, \\sigma_{LT}, and \\sigma_{TT} of \\pi^0 electroproduction from the proton were measured from threshold up to an additional center of mass energy of 40 MeV, at a value of the photon four-momentum transfer of Q^2= 0.05 GeV^2/c^2 and a center of mass angle of \\theta=90^\\circ. By an additional out-of-plane measurement with polarized electrons \\sigma_{LT'} was determined. This showed for the first time the cusp effect above the \\pi^+ threshold in the imaginary part of the s-wave. The predictions of Heavy Baryon Chiral Perturbation T"},"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":"0705.3816","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"nucl-ex","submitted_at":"2007-05-25T17:37:31Z","cross_cats_sorted":[],"title_canon_sha256":"6050ec1dad3df40312410bbc64676e0b1558c64232569caa27845c3c97a653d0","abstract_canon_sha256":"33d461a852b2f1e03931a153bcb73eaa9cab71086b140630a9ae83085941342a"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:31:14.548100Z","signature_b64":"t9g4+ZAZuyAMe+IxzMuVHNc7U2odAYmklO3I3r+9T2gEIWYmCZ9gM9P7QA0Wbjt5HmMaCGjSqBv1ZAP13VpUDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"08e1deb6f50a15d495a0d11c8ee0e454f01a93bd4b1d6fe519a84182d7c8d3b8","last_reissued_at":"2026-07-04T15:31:14.547654Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:31:14.547654Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Separated cross sections in \\pi^0 electroproduction at threshold at Q^2 = 0.05 GeV^2/c^2","license":"","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A. Liesenfeld, A. M. Bernstein, A. Wagner, D. Baumann, G. Rosner, H. Merkel, H. Schmieden, I. Ewald, J. Bermuth, J. Friedrich, J. M. Friedrich, K. Bohinc, K. W. Krygier, M. Ding, M. Kahrau, M. Kohl, M. M. Pavan, M. O. Distler, M. Potokar, M. Seimetz, M. Weis, P. Bartsch, P. Merle, R. B\\\"ohm, R. Neuhausen, S. \\v{S}irca, Th. Pospischil, Th. Walcher, U. M\\\"uller","submitted_at":"2007-05-25T17:37:31Z","abstract_excerpt":"The differential cross sections \\sigma_0=\\sigma_T+\\epsilon \\sigma_L, \\sigma_{LT}, and \\sigma_{TT} of \\pi^0 electroproduction from the proton were measured from threshold up to an additional center of mass energy of 40 MeV, at a value of the photon four-momentum transfer of Q^2= 0.05 GeV^2/c^2 and a center of mass angle of \\theta=90^\\circ. By an additional out-of-plane measurement with polarized electrons \\sigma_{LT'} was determined. This showed for the first time the cusp effect above the \\pi^+ threshold in the imaginary part of the s-wave. The predictions of Heavy Baryon Chiral Perturbation T"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0705.3816","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/0705.3816/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"0705.3816","created_at":"2026-07-04T15:31:14.547714+00:00"},{"alias_kind":"arxiv_version","alias_value":"0705.3816v1","created_at":"2026-07-04T15:31:14.547714+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0705.3816","created_at":"2026-07-04T15:31:14.547714+00:00"},{"alias_kind":"pith_short_12","alias_value":"BDQ55NXVBIK5","created_at":"2026-07-04T15:31:14.547714+00:00"},{"alias_kind":"pith_short_16","alias_value":"BDQ55NXVBIK5JFNA","created_at":"2026-07-04T15:31:14.547714+00:00"},{"alias_kind":"pith_short_8","alias_value":"BDQ55NXV","created_at":"2026-07-04T15:31:14.547714+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/BDQ55NXVBIK5JFNA2EOI5YHEKT","json":"https://pith.science/pith/BDQ55NXVBIK5JFNA2EOI5YHEKT.json","graph_json":"https://pith.science/api/pith-number/BDQ55NXVBIK5JFNA2EOI5YHEKT/graph.json","events_json":"https://pith.science/api/pith-number/BDQ55NXVBIK5JFNA2EOI5YHEKT/events.json","paper":"https://pith.science/paper/BDQ55NXV"},"agent_actions":{"view_html":"https://pith.science/pith/BDQ55NXVBIK5JFNA2EOI5YHEKT","download_json":"https://pith.science/pith/BDQ55NXVBIK5JFNA2EOI5YHEKT.json","view_paper":"https://pith.science/paper/BDQ55NXV","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0705.3816&json=true","fetch_graph":"https://pith.science/api/pith-number/BDQ55NXVBIK5JFNA2EOI5YHEKT/graph.json","fetch_events":"https://pith.science/api/pith-number/BDQ55NXVBIK5JFNA2EOI5YHEKT/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/BDQ55NXVBIK5JFNA2EOI5YHEKT/action/timestamp_anchor","attest_storage":"https://pith.science/pith/BDQ55NXVBIK5JFNA2EOI5YHEKT/action/storage_attestation","attest_author":"https://pith.science/pith/BDQ55NXVBIK5JFNA2EOI5YHEKT/action/author_attestation","sign_citation":"https://pith.science/pith/BDQ55NXVBIK5JFNA2EOI5YHEKT/action/citation_signature","submit_replication":"https://pith.science/pith/BDQ55NXVBIK5JFNA2EOI5YHEKT/action/replication_record"}},"created_at":"2026-07-04T15:31:14.547714+00:00","updated_at":"2026-07-04T15:31:14.547714+00:00"}