{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:CBG225KS3HMRXBPVXPP2KEOCAM","short_pith_number":"pith:CBG225KS","canonical_record":{"source":{"id":"1208.5559","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2012-08-28T04:46:25Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"658784cd978c2c135c44afcd6ccd221f501dcd19c961a968aac66bf161a14e86","abstract_canon_sha256":"7fc93facbcf023be541dad4170377bc0e99b10376b0fe12588d76795978aeb35"},"schema_version":"1.0"},"canonical_sha256":"104dad7552d9d91b85f5bbdfa511c20335d0fe9601213a0f1904da6d6f0c5565","source":{"kind":"arxiv","id":"1208.5559","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.5559","created_at":"2026-05-18T03:26:33Z"},{"alias_kind":"arxiv_version","alias_value":"1208.5559v2","created_at":"2026-05-18T03:26:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.5559","created_at":"2026-05-18T03:26:33Z"},{"alias_kind":"pith_short_12","alias_value":"CBG225KS3HMR","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_16","alias_value":"CBG225KS3HMRXBPV","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_8","alias_value":"CBG225KS","created_at":"2026-05-18T12:27:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:CBG225KS3HMRXBPVXPP2KEOCAM","target":"record","payload":{"canonical_record":{"source":{"id":"1208.5559","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2012-08-28T04:46:25Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"658784cd978c2c135c44afcd6ccd221f501dcd19c961a968aac66bf161a14e86","abstract_canon_sha256":"7fc93facbcf023be541dad4170377bc0e99b10376b0fe12588d76795978aeb35"},"schema_version":"1.0"},"canonical_sha256":"104dad7552d9d91b85f5bbdfa511c20335d0fe9601213a0f1904da6d6f0c5565","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:26:33.759264Z","signature_b64":"egrbhSBgSCYLn1h//PZdC9NvN4AfxwR5g64CkSppi4CKDQONOAeWAl+YhDUMGbpkanOkqA7rkWzoXwbGfCE+BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"104dad7552d9d91b85f5bbdfa511c20335d0fe9601213a0f1904da6d6f0c5565","last_reissued_at":"2026-05-18T03:26:33.758836Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:26:33.758836Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1208.5559","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:26:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lXgyVeb46FFu9QKA/HOQYfTAxfHEdjHWwRCclByZMThS+MN8/RjdXqjNZ6TJn/I73RWppDyq0DqRM9nd8nXLBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T21:20:26.301755Z"},"content_sha256":"66384a27589703b16648782b1bc3aed7f143f0b5d751f6681bb15c226fda33be","schema_version":"1.0","event_id":"sha256:66384a27589703b16648782b1bc3aed7f143f0b5d751f6681bb15c226fda33be"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:CBG225KS3HMRXBPVXPP2KEOCAM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Searching for sterile neutrinos from $\\pi$ and $K$ decays","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"Daniel Boyanovsky, Louis Lello","submitted_at":"2012-08-28T04:46:25Z","abstract_excerpt":"The production of heavy sterile neutrinos from $\\pi^-,K^-$ decay at rest yields charged leptons with negative helicity (positive for $\\pi^+,K^+$). We obtain the branching ratio for this process and argue that a Stern-Gerlach filter leads to spatially separated domains of both helicity components with abundances determined by the branching ratio. Complemented with a search of monochromatic peaks, this setup can yield both the mass and mixing angles for sterile neutrinos with masses in the range $3 MeV \\lesssim m_s \\lesssim 414 MeV$ in next generation high intensity experiments. We also study os"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.5559","kind":"arxiv","version":2},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:26:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rfWG5Crvy+5XO8Tu+iED1JsNZ/uTjflyh9x9h05Podxs/66X6H353DIGM15qIW2vmMU4nHx+rSO+VEjKMt0aCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T21:20:26.302112Z"},"content_sha256":"876447ffffd1c16f96b6fb5ab8eed4d5eebc15d52b0d1f3a1596f4ace81360eb","schema_version":"1.0","event_id":"sha256:876447ffffd1c16f96b6fb5ab8eed4d5eebc15d52b0d1f3a1596f4ace81360eb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CBG225KS3HMRXBPVXPP2KEOCAM/bundle.json","state_url":"https://pith.science/pith/CBG225KS3HMRXBPVXPP2KEOCAM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CBG225KS3HMRXBPVXPP2KEOCAM/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-27T21:20:26Z","links":{"resolver":"https://pith.science/pith/CBG225KS3HMRXBPVXPP2KEOCAM","bundle":"https://pith.science/pith/CBG225KS3HMRXBPVXPP2KEOCAM/bundle.json","state":"https://pith.science/pith/CBG225KS3HMRXBPVXPP2KEOCAM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CBG225KS3HMRXBPVXPP2KEOCAM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:CBG225KS3HMRXBPVXPP2KEOCAM","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"7fc93facbcf023be541dad4170377bc0e99b10376b0fe12588d76795978aeb35","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2012-08-28T04:46:25Z","title_canon_sha256":"658784cd978c2c135c44afcd6ccd221f501dcd19c961a968aac66bf161a14e86"},"schema_version":"1.0","source":{"id":"1208.5559","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.5559","created_at":"2026-05-18T03:26:33Z"},{"alias_kind":"arxiv_version","alias_value":"1208.5559v2","created_at":"2026-05-18T03:26:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.5559","created_at":"2026-05-18T03:26:33Z"},{"alias_kind":"pith_short_12","alias_value":"CBG225KS3HMR","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_16","alias_value":"CBG225KS3HMRXBPV","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_8","alias_value":"CBG225KS","created_at":"2026-05-18T12:27:01Z"}],"graph_snapshots":[{"event_id":"sha256:876447ffffd1c16f96b6fb5ab8eed4d5eebc15d52b0d1f3a1596f4ace81360eb","target":"graph","created_at":"2026-05-18T03:26:33Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"The production of heavy sterile neutrinos from $\\pi^-,K^-$ decay at rest yields charged leptons with negative helicity (positive for $\\pi^+,K^+$). We obtain the branching ratio for this process and argue that a Stern-Gerlach filter leads to spatially separated domains of both helicity components with abundances determined by the branching ratio. Complemented with a search of monochromatic peaks, this setup can yield both the mass and mixing angles for sterile neutrinos with masses in the range $3 MeV \\lesssim m_s \\lesssim 414 MeV$ in next generation high intensity experiments. We also study os","authors_text":"Daniel Boyanovsky, Louis Lello","cross_cats":["hep-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2012-08-28T04:46:25Z","title":"Searching for sterile neutrinos from $\\pi$ and $K$ decays"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.5559","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:66384a27589703b16648782b1bc3aed7f143f0b5d751f6681bb15c226fda33be","target":"record","created_at":"2026-05-18T03:26:33Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"7fc93facbcf023be541dad4170377bc0e99b10376b0fe12588d76795978aeb35","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2012-08-28T04:46:25Z","title_canon_sha256":"658784cd978c2c135c44afcd6ccd221f501dcd19c961a968aac66bf161a14e86"},"schema_version":"1.0","source":{"id":"1208.5559","kind":"arxiv","version":2}},"canonical_sha256":"104dad7552d9d91b85f5bbdfa511c20335d0fe9601213a0f1904da6d6f0c5565","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"104dad7552d9d91b85f5bbdfa511c20335d0fe9601213a0f1904da6d6f0c5565","first_computed_at":"2026-05-18T03:26:33.758836Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:26:33.758836Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"egrbhSBgSCYLn1h//PZdC9NvN4AfxwR5g64CkSppi4CKDQONOAeWAl+YhDUMGbpkanOkqA7rkWzoXwbGfCE+BQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:26:33.759264Z","signed_message":"canonical_sha256_bytes"},"source_id":"1208.5559","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:66384a27589703b16648782b1bc3aed7f143f0b5d751f6681bb15c226fda33be","sha256:876447ffffd1c16f96b6fb5ab8eed4d5eebc15d52b0d1f3a1596f4ace81360eb"],"state_sha256":"2d819b0429d9bafcab524eaa3f91f2b76ec3efd4fcb0b3d4d6e3dbaa47272326"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KJ4MmzGBvdwZaO0SXUYkRtttjqrzDXYFD2ojZ4x+LYRtb4qMwTuC0Re9XsWXyzJtJUHmpNe9vbvCx5ANkLNLCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T21:20:26.304401Z","bundle_sha256":"6088011999cd638352a45860e2c8a48aee042d4240b30fe8dc10a142b29438f6"}}