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A missing mass resolution of 2.0 MeV was achieved.\n  A search for structures in the mass region of 0.97 < M_{X^0} < 1.06 GeV yielded no significant signal. The yield ratio of p(e,e^{prime}pi^+)X^0/p(e,e^{prime}pi^+)n was determined to be (-0.35 +/- 0.35) times 10^{-3} at 1.004 GeV and (0.34 +/- 0.42) times 10^{-3} at 1.044 GeV."},"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":"nucl-ex/0208008","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"nucl-ex","submitted_at":"2002-08-12T22:04:12Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"8e5f379d73f42270021877031dbbf865ed694b66c45fbb647fac45cc7db81226","abstract_canon_sha256":"a18539ab8eb361db2e1d9f61a93761e308c8b9f0f0d2c818831d1998667b6169"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:35:38.166402Z","signature_b64":"UATidDNRxEFe1UgI9f1+MVro4W/ufrN8Tjl7pQQNTRDXIIjWwTaP5JV+aXO+iJaiB3TNtUf0oaXvrllpbW98Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"96a5f2f19e51747747a00911891ce8086cc280b64d5714944c601409ce30ecba","last_reissued_at":"2026-05-18T02:35:38.165956Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:35:38.165956Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A Search for Neutral Baryon Resonances Below Pion Threshold","license":"","headline":"","cross_cats":["nucl-th"],"primary_cat":"nucl-ex","authors_text":"B. 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