{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:Z3BYP7SFT7JUJB66IXKD3TNZTX","short_pith_number":"pith:Z3BYP7SF","canonical_record":{"source":{"id":"1504.01480","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2015-04-07T06:03:51Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"29afbbe8a6af294dc1d84a0cf3017f4a05b7ab16b6b8269d146f263e936efc4e","abstract_canon_sha256":"833f456af152b2b3d99ba9b53af8d339715bfd55cafdafcebc37863e7ca76c77"},"schema_version":"1.0"},"canonical_sha256":"cec387fe459fd34487de45d43dcdb99dffc31069ed68956a8267b26dfb397d3c","source":{"kind":"arxiv","id":"1504.01480","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1504.01480","created_at":"2026-05-18T02:17:32Z"},{"alias_kind":"arxiv_version","alias_value":"1504.01480v1","created_at":"2026-05-18T02:17:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.01480","created_at":"2026-05-18T02:17:32Z"},{"alias_kind":"pith_short_12","alias_value":"Z3BYP7SFT7JU","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_16","alias_value":"Z3BYP7SFT7JUJB66","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_8","alias_value":"Z3BYP7SF","created_at":"2026-05-18T12:29:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:Z3BYP7SFT7JUJB66IXKD3TNZTX","target":"record","payload":{"canonical_record":{"source":{"id":"1504.01480","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2015-04-07T06:03:51Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"29afbbe8a6af294dc1d84a0cf3017f4a05b7ab16b6b8269d146f263e936efc4e","abstract_canon_sha256":"833f456af152b2b3d99ba9b53af8d339715bfd55cafdafcebc37863e7ca76c77"},"schema_version":"1.0"},"canonical_sha256":"cec387fe459fd34487de45d43dcdb99dffc31069ed68956a8267b26dfb397d3c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:17:32.959424Z","signature_b64":"njwqpezG0MgjeeRQnlme/WByGsxyIZt4trQ9mw7sFq0EF4OXvtQueyvMEhqSLHqmqDCGEB/px5klYFIEW9xNDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cec387fe459fd34487de45d43dcdb99dffc31069ed68956a8267b26dfb397d3c","last_reissued_at":"2026-05-18T02:17:32.958662Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:17:32.958662Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1504.01480","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:17:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4orkazn0BmrxeMt0vf2opewwy6mh6M4BV5zeQ4f9M/6J5OiVyuSfvbked+6PzgQIDPygFQpOQPGrbXIMCUkvBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T11:34:25.156508Z"},"content_sha256":"c075ed5d155f07f1364458dd705c7a62f06e5cdef822cd566b66a7afbbfaeb1a","schema_version":"1.0","event_id":"sha256:c075ed5d155f07f1364458dd705c7a62f06e5cdef822cd566b66a7afbbfaeb1a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:Z3BYP7SFT7JUJB66IXKD3TNZTX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Letter of Intent: The Accelerator Neutrino Neutron Interaction Experiment (ANNIE)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"physics.ins-det","authors_text":"A. Elagin, A. Weinstein, C. Blanco, C. Pilcher, E. Catano-Mur, E. Ramberg, F. Di Lodovico, F. Krennrich, G. Jocher, G. Varner, H. Frisch, H. Sobel, I. Anghel, J. F. Beacom, J. Griskevich, J. Learned, J. Repond, L. Winslow, L. Xia, M. Bergevin, M.C. Sanchez, M. Malek, M. Smy, M. Vagins, M. Wetstein, M. Yeh, R. Hill, R. Northrop, R. Sacco, R. Svoboda, R. Wagner, S.M. Usman, T. Katori","submitted_at":"2015-04-07T06:03:51Z","abstract_excerpt":"Neutron tagging in Gadolinium-doped water may play a significant role in reducing backgrounds from atmospheric neutrinos in next generation proton-decay searches using megaton-scale Water Cherenkov detectors. Similar techniques might also be useful in the detection of supernova neutrinos. Accurate determination of neutron tagging efficiencies will require a detailed understanding of the number of neutrons produced by neutrino interactions in water as a function of momentum transferred. We propose the Atmospheric Neutrino Neutron Interaction Experiment (ANNIE), designed to measure the neutron y"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.01480","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:17:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yP9CzZnSQmVUMlGiG8SyYjbO6p6RneHI5zkIJyKR8Vp0m+yCzoXGlJLfVBPq0xRmsNh5PWIEnRPD7etDhGABBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T11:34:25.156868Z"},"content_sha256":"f81c33ec1fd7a131a64e8c5552b4d7b599801092af2e9e9606d27ecfe35c2803","schema_version":"1.0","event_id":"sha256:f81c33ec1fd7a131a64e8c5552b4d7b599801092af2e9e9606d27ecfe35c2803"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Z3BYP7SFT7JUJB66IXKD3TNZTX/bundle.json","state_url":"https://pith.science/pith/Z3BYP7SFT7JUJB66IXKD3TNZTX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Z3BYP7SFT7JUJB66IXKD3TNZTX/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":"2026-06-01T11:34:25Z","links":{"resolver":"https://pith.science/pith/Z3BYP7SFT7JUJB66IXKD3TNZTX","bundle":"https://pith.science/pith/Z3BYP7SFT7JUJB66IXKD3TNZTX/bundle.json","state":"https://pith.science/pith/Z3BYP7SFT7JUJB66IXKD3TNZTX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Z3BYP7SFT7JUJB66IXKD3TNZTX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:Z3BYP7SFT7JUJB66IXKD3TNZTX","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":"833f456af152b2b3d99ba9b53af8d339715bfd55cafdafcebc37863e7ca76c77","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2015-04-07T06:03:51Z","title_canon_sha256":"29afbbe8a6af294dc1d84a0cf3017f4a05b7ab16b6b8269d146f263e936efc4e"},"schema_version":"1.0","source":{"id":"1504.01480","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1504.01480","created_at":"2026-05-18T02:17:32Z"},{"alias_kind":"arxiv_version","alias_value":"1504.01480v1","created_at":"2026-05-18T02:17:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.01480","created_at":"2026-05-18T02:17:32Z"},{"alias_kind":"pith_short_12","alias_value":"Z3BYP7SFT7JU","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_16","alias_value":"Z3BYP7SFT7JUJB66","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_8","alias_value":"Z3BYP7SF","created_at":"2026-05-18T12:29:52Z"}],"graph_snapshots":[{"event_id":"sha256:f81c33ec1fd7a131a64e8c5552b4d7b599801092af2e9e9606d27ecfe35c2803","target":"graph","created_at":"2026-05-18T02:17:32Z","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":"Neutron tagging in Gadolinium-doped water may play a significant role in reducing backgrounds from atmospheric neutrinos in next generation proton-decay searches using megaton-scale Water Cherenkov detectors. Similar techniques might also be useful in the detection of supernova neutrinos. Accurate determination of neutron tagging efficiencies will require a detailed understanding of the number of neutrons produced by neutrino interactions in water as a function of momentum transferred. We propose the Atmospheric Neutrino Neutron Interaction Experiment (ANNIE), designed to measure the neutron y","authors_text":"A. Elagin, A. Weinstein, C. Blanco, C. Pilcher, E. Catano-Mur, E. Ramberg, F. Di Lodovico, F. Krennrich, G. Jocher, G. Varner, H. Frisch, H. Sobel, I. Anghel, J. F. Beacom, J. Griskevich, J. Learned, J. Repond, L. Winslow, L. Xia, M. Bergevin, M.C. Sanchez, M. Malek, M. Smy, M. Vagins, M. Wetstein, M. Yeh, R. Hill, R. Northrop, R. Sacco, R. Svoboda, R. Wagner, S.M. Usman, T. Katori","cross_cats":["hep-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2015-04-07T06:03:51Z","title":"Letter of Intent: The Accelerator Neutrino Neutron Interaction Experiment (ANNIE)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.01480","kind":"arxiv","version":1},"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:c075ed5d155f07f1364458dd705c7a62f06e5cdef822cd566b66a7afbbfaeb1a","target":"record","created_at":"2026-05-18T02:17:32Z","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":"833f456af152b2b3d99ba9b53af8d339715bfd55cafdafcebc37863e7ca76c77","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2015-04-07T06:03:51Z","title_canon_sha256":"29afbbe8a6af294dc1d84a0cf3017f4a05b7ab16b6b8269d146f263e936efc4e"},"schema_version":"1.0","source":{"id":"1504.01480","kind":"arxiv","version":1}},"canonical_sha256":"cec387fe459fd34487de45d43dcdb99dffc31069ed68956a8267b26dfb397d3c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cec387fe459fd34487de45d43dcdb99dffc31069ed68956a8267b26dfb397d3c","first_computed_at":"2026-05-18T02:17:32.958662Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:17:32.958662Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"njwqpezG0MgjeeRQnlme/WByGsxyIZt4trQ9mw7sFq0EF4OXvtQueyvMEhqSLHqmqDCGEB/px5klYFIEW9xNDA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:17:32.959424Z","signed_message":"canonical_sha256_bytes"},"source_id":"1504.01480","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c075ed5d155f07f1364458dd705c7a62f06e5cdef822cd566b66a7afbbfaeb1a","sha256:f81c33ec1fd7a131a64e8c5552b4d7b599801092af2e9e9606d27ecfe35c2803"],"state_sha256":"9504f5515ad45f40d495f271a26d9e295b7410466fa4dd442521b365f97d1366"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bVubdKLuUYJtuigN2Rpwbs9aKPr7biNWPV9IILQoxoJJ3szZBeOjuKiE09ZQsiyi2lzm+Cp+jdaNN8cM9Oc4Bg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T11:34:25.158954Z","bundle_sha256":"86d1a7b57c1c5b1b15dd285422a3cd6e2dadedc106ebdb48aa9e42ec1fd0d13b"}}