{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:GDWCHWN6RKTRT5EU4KXISBOALZ","short_pith_number":"pith:GDWCHWN6","canonical_record":{"source":{"id":"1804.00184","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2018-03-31T15:31:58Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"f98593d0067d33229a8e58b47ef26425babf19887326b6a6bf156e5b9e2f5bd1","abstract_canon_sha256":"111b79081960556aac04c8ac475c11972c478b26b6679c28eff02f56ff0eabb4"},"schema_version":"1.0"},"canonical_sha256":"30ec23d9be8aa719f494e2ae8905c05e78ce27316908d047312428a616ff77b5","source":{"kind":"arxiv","id":"1804.00184","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.00184","created_at":"2026-05-18T00:00:30Z"},{"alias_kind":"arxiv_version","alias_value":"1804.00184v3","created_at":"2026-05-18T00:00:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.00184","created_at":"2026-05-18T00:00:30Z"},{"alias_kind":"pith_short_12","alias_value":"GDWCHWN6RKTR","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_16","alias_value":"GDWCHWN6RKTRT5EU","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_8","alias_value":"GDWCHWN6","created_at":"2026-05-18T12:32:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:GDWCHWN6RKTRT5EU4KXISBOALZ","target":"record","payload":{"canonical_record":{"source":{"id":"1804.00184","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2018-03-31T15:31:58Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"f98593d0067d33229a8e58b47ef26425babf19887326b6a6bf156e5b9e2f5bd1","abstract_canon_sha256":"111b79081960556aac04c8ac475c11972c478b26b6679c28eff02f56ff0eabb4"},"schema_version":"1.0"},"canonical_sha256":"30ec23d9be8aa719f494e2ae8905c05e78ce27316908d047312428a616ff77b5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:00:30.514329Z","signature_b64":"mLg+FQCq8iwPEa1qrZbLqjIb2QpMOihCMrCaZj7Q6voXxjtYYOeMaaJnUiq8AFDBSoYhwNTApKlcutXFTWbjAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"30ec23d9be8aa719f494e2ae8905c05e78ce27316908d047312428a616ff77b5","last_reissued_at":"2026-05-18T00:00:30.513787Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:00:30.513787Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1804.00184","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:00:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vrPa1Fdd69JukowEYr+3hVdor00oWD3ajXYMfFs/uhtk1//S/VxPuvMNhnw5XdU5W0bnQIL1GcYGQsjZqirEBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T23:29:09.292384Z"},"content_sha256":"00312eebe1a1df989b7db66ac6969c54554789117a540053cfcdaa850af3fbc5","schema_version":"1.0","event_id":"sha256:00312eebe1a1df989b7db66ac6969c54554789117a540053cfcdaa850af3fbc5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:GDWCHWN6RKTRT5EU4KXISBOALZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Mixed states for mixing neutrinos","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"Carlo Giunti, Gabriel Cozzella","submitted_at":"2018-03-31T15:31:58Z","abstract_excerpt":"Here we discuss the description of flavor neutrinos produced or detected in processes which involve more than one neutrino. We show that in these cases flavor neutrinos cannot be separately described by pure states, but require a density matrix description. We consider explicitly the examples of $\\nu_{e}$ and $\\bar\\nu_{\\mu}$ production in $\\mu^{+}$ decay and $\\nu_{\\mu}$ detection through scattering on electrons. We show that the density matrix which describes a flavor neutrino can be approximated with a density matrix of a pure state only when the differences of the neutrino masses are neglect"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.00184","kind":"arxiv","version":3},"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":"2026-05-18T00:00:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2kUeR35Oe9hMt6ChseeFtOKrGrZ8z1PT5oCqAA3CaPaoha4jPoQJ+UEABaXVpkS15CnzIQrzZIfRA0RFjJiCBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T23:29:09.292727Z"},"content_sha256":"06c2ac0be1e5399573892d0b6d05fa5264cd8ee5a5434df03843bbb45f5c226e","schema_version":"1.0","event_id":"sha256:06c2ac0be1e5399573892d0b6d05fa5264cd8ee5a5434df03843bbb45f5c226e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GDWCHWN6RKTRT5EU4KXISBOALZ/bundle.json","state_url":"https://pith.science/pith/GDWCHWN6RKTRT5EU4KXISBOALZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GDWCHWN6RKTRT5EU4KXISBOALZ/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":"2026-06-08T23:29:09Z","links":{"resolver":"https://pith.science/pith/GDWCHWN6RKTRT5EU4KXISBOALZ","bundle":"https://pith.science/pith/GDWCHWN6RKTRT5EU4KXISBOALZ/bundle.json","state":"https://pith.science/pith/GDWCHWN6RKTRT5EU4KXISBOALZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GDWCHWN6RKTRT5EU4KXISBOALZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:GDWCHWN6RKTRT5EU4KXISBOALZ","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":"111b79081960556aac04c8ac475c11972c478b26b6679c28eff02f56ff0eabb4","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2018-03-31T15:31:58Z","title_canon_sha256":"f98593d0067d33229a8e58b47ef26425babf19887326b6a6bf156e5b9e2f5bd1"},"schema_version":"1.0","source":{"id":"1804.00184","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.00184","created_at":"2026-05-18T00:00:30Z"},{"alias_kind":"arxiv_version","alias_value":"1804.00184v3","created_at":"2026-05-18T00:00:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.00184","created_at":"2026-05-18T00:00:30Z"},{"alias_kind":"pith_short_12","alias_value":"GDWCHWN6RKTR","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_16","alias_value":"GDWCHWN6RKTRT5EU","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_8","alias_value":"GDWCHWN6","created_at":"2026-05-18T12:32:25Z"}],"graph_snapshots":[{"event_id":"sha256:06c2ac0be1e5399573892d0b6d05fa5264cd8ee5a5434df03843bbb45f5c226e","target":"graph","created_at":"2026-05-18T00:00:30Z","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":"Here we discuss the description of flavor neutrinos produced or detected in processes which involve more than one neutrino. We show that in these cases flavor neutrinos cannot be separately described by pure states, but require a density matrix description. We consider explicitly the examples of $\\nu_{e}$ and $\\bar\\nu_{\\mu}$ production in $\\mu^{+}$ decay and $\\nu_{\\mu}$ detection through scattering on electrons. We show that the density matrix which describes a flavor neutrino can be approximated with a density matrix of a pure state only when the differences of the neutrino masses are neglect","authors_text":"Carlo Giunti, Gabriel Cozzella","cross_cats":["hep-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2018-03-31T15:31:58Z","title":"Mixed states for mixing neutrinos"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.00184","kind":"arxiv","version":3},"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":"sha256:00312eebe1a1df989b7db66ac6969c54554789117a540053cfcdaa850af3fbc5","target":"record","created_at":"2026-05-18T00:00:30Z","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":"111b79081960556aac04c8ac475c11972c478b26b6679c28eff02f56ff0eabb4","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2018-03-31T15:31:58Z","title_canon_sha256":"f98593d0067d33229a8e58b47ef26425babf19887326b6a6bf156e5b9e2f5bd1"},"schema_version":"1.0","source":{"id":"1804.00184","kind":"arxiv","version":3}},"canonical_sha256":"30ec23d9be8aa719f494e2ae8905c05e78ce27316908d047312428a616ff77b5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"30ec23d9be8aa719f494e2ae8905c05e78ce27316908d047312428a616ff77b5","first_computed_at":"2026-05-18T00:00:30.513787Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:00:30.513787Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"mLg+FQCq8iwPEa1qrZbLqjIb2QpMOihCMrCaZj7Q6voXxjtYYOeMaaJnUiq8AFDBSoYhwNTApKlcutXFTWbjAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:00:30.514329Z","signed_message":"canonical_sha256_bytes"},"source_id":"1804.00184","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:00312eebe1a1df989b7db66ac6969c54554789117a540053cfcdaa850af3fbc5","sha256:06c2ac0be1e5399573892d0b6d05fa5264cd8ee5a5434df03843bbb45f5c226e"],"state_sha256":"959f2459f3dc3e45cb69484b1d77720c0717e32ff8e0dffc7746ed0fc08ad6ff"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rAw2lXod++xGIYcDCjGU1P8oKn0BH5g1JRE5iNyvgtH3fuMX8OzJN+Hct1M2VmG2ON4Jixq7LdQ9RUyK7wvMAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T23:29:09.294603Z","bundle_sha256":"77a8e496506f00121d60b451d18d4687800c53265de0b4e7bc6c4cb3c8b30784"}}