{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:5A5RJVRGFA3OOHVADGVZKY5WJS","short_pith_number":"pith:5A5RJVRG","canonical_record":{"source":{"id":"2503.15247","kind":"arxiv","version":4},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ex","submitted_at":"2025-03-19T14:22:48Z","cross_cats_sorted":["physics.ins-det"],"title_canon_sha256":"f75a0e3d3d084492f9144e959821d64a486497b0ee41f09a9b431e6f9444186e","abstract_canon_sha256":"e0d11c18065689fd52441dc7b9043c57240ac5d7fc539323398bd21a9043c515"},"schema_version":"1.0"},"canonical_sha256":"e83b14d6262836e71ea019ab9563b64c9db5ea8613563ebeceee4c0c87b6013d","source":{"kind":"arxiv","id":"2503.15247","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2503.15247","created_at":"2026-07-05T10:43:46Z"},{"alias_kind":"arxiv_version","alias_value":"2503.15247v4","created_at":"2026-07-05T10:43:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2503.15247","created_at":"2026-07-05T10:43:46Z"},{"alias_kind":"pith_short_12","alias_value":"5A5RJVRGFA3O","created_at":"2026-07-05T10:43:46Z"},{"alias_kind":"pith_short_16","alias_value":"5A5RJVRGFA3OOHVA","created_at":"2026-07-05T10:43:46Z"},{"alias_kind":"pith_short_8","alias_value":"5A5RJVRG","created_at":"2026-07-05T10:43:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:5A5RJVRGFA3OOHVADGVZKY5WJS","target":"record","payload":{"canonical_record":{"source":{"id":"2503.15247","kind":"arxiv","version":4},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ex","submitted_at":"2025-03-19T14:22:48Z","cross_cats_sorted":["physics.ins-det"],"title_canon_sha256":"f75a0e3d3d084492f9144e959821d64a486497b0ee41f09a9b431e6f9444186e","abstract_canon_sha256":"e0d11c18065689fd52441dc7b9043c57240ac5d7fc539323398bd21a9043c515"},"schema_version":"1.0"},"canonical_sha256":"e83b14d6262836e71ea019ab9563b64c9db5ea8613563ebeceee4c0c87b6013d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:43:46.012194Z","signature_b64":"1jNKv+AlMC/3VQV3/M9lvXquWnqVKg0qt8Y0GkAGHQpWlKN81iZBNwkiYPFd/zx9KkAXp9IaspoejxxeIailDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e83b14d6262836e71ea019ab9563b64c9db5ea8613563ebeceee4c0c87b6013d","last_reissued_at":"2026-07-05T10:43:46.011698Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:43:46.011698Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2503.15247","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T10:43:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"j/gs3F9FLwqMxJgClkE24aweGJUQI3XsroDaEJUMOuRzBmkGNYfypu4j5RJyz1eP62ib5rcRyjZTQ4GF8/vFAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-22T19:39:16.441717Z"},"content_sha256":"a641beced9817e09d46bee634311e60b7334befa2c77a9cf3ecc7607cc1fdb7c","schema_version":"1.0","event_id":"sha256:a641beced9817e09d46bee634311e60b7334befa2c77a9cf3ecc7607cc1fdb7c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:5A5RJVRGFA3OOHVADGVZKY5WJS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Classification of Electron and Muon Neutrino Events for the ESS$\\nu$SB Near Water Cherenkov Detector using Graph Neural Networks","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.ins-det"],"primary_cat":"hep-ex","authors_text":"A. Bignami, A. Branca, A. Burgman, A. Farricker, A. Giarnetti, A. Kayis Topaksu, A.K. Bhattacharyya, A. Leisos, A. Longhin, A. Psallidas, A. Scanu, A. Sosa, A. Tsirigotis, B. Bolling, B. Kildetoft, B. Kli\\v{c}ek, C. Hagner, Ch. Petridou, C.J. Carlile, C. Maiano, C. Marrelli, C. Schwab, D. Bar\\v{c}ot, D. D'Ago, D. Meloni, D. Patrzalek, D. Saiang, D. Sampsonidis, E. Baussan, E. Bouquerel, E. Cristaldo Morales, E. Fasoula, E. Kasimi, E. Trachanas, F. Bramati, F. Pupilli, F. Sordo, F. Terranova, G. Brunetti, G. Fanourakis, G. Gokbulut, G. Petkov, G. Stavropoulos, G. Vankova-Kirilova, H. Danared, I. Bustinduy, I. Efthymiopoulos, I. Karakoulias, J. Aguilar, J. Cederkall, J. Garc\\'ia-Marcos, J.L. Mu\\~noz, J. P. A. M. de Andr\\'e, J. Park, J. Wurtz, K. E. Iversen, K. Kordas, K. Niewczas, L. Hali\\'c, M. Anastasopoulos, M. Blennow, M. Bogomilov, M. Collins, M. Dracos, M. Eshraqi, M. Ghosh, M. Hooft, M. Jenssen, M. Lindroos, M. Mezzetto, M. Oglakci, M. Olveg\\r{a}rd, M. Pari, M. Stip\\v{c}evi\\'c, M. Vanderpoorten, N. Gazis, N. Jachowicz, N. Milas, N. Vassilopoulos, O. Zormpa, P. Christiansen, P. Cupia\\l, P. Poussot, R. Johansson, R. Tarkeshian, R. Tsenov, S. Choubey, S. E. Tzamarias, S. Marangoni, S. Vihonen, T. Ekel\\\"of, T. Fukuda, Th. Geralis, T. Ohlsson, T. Tolba, T. W. Choi, V. Zeter","submitted_at":"2025-03-19T14:22:48Z","abstract_excerpt":"In the effort to obtain a precise measurement of leptonic CP-violation with the ESS$\\nu$SB experiment, accurate and fast reconstruction of detector events plays a pivotal role. In this work, we examine the possibility of replacing the currently proposed likelihood-based reconstruction method with an approach based on Graph Neural Networks (GNNs). As the likelihood-based reconstruction method is reasonably accurate but computationally expensive, one of the benefits of a Machine Learning (ML) based method is enabling fast event reconstruction in the detector development phase, allowing for easie"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2503.15247","kind":"arxiv","version":4},"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/2503.15247/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T10:43:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XE07vb1zuwq9h/T9RhSAeBwQXU9pBhk9f6uor0LMXMqjSjh/jJAv2D+hD/DtcJLJiLD+tAsYtXHJbOVB+9apCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-22T19:39:16.442106Z"},"content_sha256":"b832b3115a9b3bc636675324ee5a7a66d9144a4b9add66a907fe116114b851f2","schema_version":"1.0","event_id":"sha256:b832b3115a9b3bc636675324ee5a7a66d9144a4b9add66a907fe116114b851f2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5A5RJVRGFA3OOHVADGVZKY5WJS/bundle.json","state_url":"https://pith.science/pith/5A5RJVRGFA3OOHVADGVZKY5WJS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5A5RJVRGFA3OOHVADGVZKY5WJS/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":"2026-07-22T19:39:16Z","links":{"resolver":"https://pith.science/pith/5A5RJVRGFA3OOHVADGVZKY5WJS","bundle":"https://pith.science/pith/5A5RJVRGFA3OOHVADGVZKY5WJS/bundle.json","state":"https://pith.science/pith/5A5RJVRGFA3OOHVADGVZKY5WJS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5A5RJVRGFA3OOHVADGVZKY5WJS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:5A5RJVRGFA3OOHVADGVZKY5WJS","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":"e0d11c18065689fd52441dc7b9043c57240ac5d7fc539323398bd21a9043c515","cross_cats_sorted":["physics.ins-det"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ex","submitted_at":"2025-03-19T14:22:48Z","title_canon_sha256":"f75a0e3d3d084492f9144e959821d64a486497b0ee41f09a9b431e6f9444186e"},"schema_version":"1.0","source":{"id":"2503.15247","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2503.15247","created_at":"2026-07-05T10:43:46Z"},{"alias_kind":"arxiv_version","alias_value":"2503.15247v4","created_at":"2026-07-05T10:43:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2503.15247","created_at":"2026-07-05T10:43:46Z"},{"alias_kind":"pith_short_12","alias_value":"5A5RJVRGFA3O","created_at":"2026-07-05T10:43:46Z"},{"alias_kind":"pith_short_16","alias_value":"5A5RJVRGFA3OOHVA","created_at":"2026-07-05T10:43:46Z"},{"alias_kind":"pith_short_8","alias_value":"5A5RJVRG","created_at":"2026-07-05T10:43:46Z"}],"graph_snapshots":[{"event_id":"sha256:b832b3115a9b3bc636675324ee5a7a66d9144a4b9add66a907fe116114b851f2","target":"graph","created_at":"2026-07-05T10:43:46Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2503.15247/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In the effort to obtain a precise measurement of leptonic CP-violation with the ESS$\\nu$SB experiment, accurate and fast reconstruction of detector events plays a pivotal role. In this work, we examine the possibility of replacing the currently proposed likelihood-based reconstruction method with an approach based on Graph Neural Networks (GNNs). As the likelihood-based reconstruction method is reasonably accurate but computationally expensive, one of the benefits of a Machine Learning (ML) based method is enabling fast event reconstruction in the detector development phase, allowing for easie","authors_text":"A. Bignami, A. Branca, A. Burgman, A. Farricker, A. Giarnetti, A. Kayis Topaksu, A.K. Bhattacharyya, A. Leisos, A. Longhin, A. Psallidas, A. Scanu, A. Sosa, A. Tsirigotis, B. Bolling, B. Kildetoft, B. Kli\\v{c}ek, C. Hagner, Ch. Petridou, C.J. Carlile, C. Maiano, C. Marrelli, C. Schwab, D. Bar\\v{c}ot, D. D'Ago, D. Meloni, D. Patrzalek, D. Saiang, D. Sampsonidis, E. Baussan, E. Bouquerel, E. Cristaldo Morales, E. Fasoula, E. Kasimi, E. Trachanas, F. Bramati, F. Pupilli, F. Sordo, F. Terranova, G. Brunetti, G. Fanourakis, G. Gokbulut, G. Petkov, G. Stavropoulos, G. Vankova-Kirilova, H. Danared, I. Bustinduy, I. Efthymiopoulos, I. Karakoulias, J. Aguilar, J. Cederkall, J. Garc\\'ia-Marcos, J.L. Mu\\~noz, J. P. A. M. de Andr\\'e, J. Park, J. Wurtz, K. E. Iversen, K. Kordas, K. Niewczas, L. Hali\\'c, M. Anastasopoulos, M. Blennow, M. Bogomilov, M. Collins, M. Dracos, M. Eshraqi, M. Ghosh, M. Hooft, M. Jenssen, M. Lindroos, M. Mezzetto, M. Oglakci, M. Olveg\\r{a}rd, M. Pari, M. Stip\\v{c}evi\\'c, M. Vanderpoorten, N. Gazis, N. Jachowicz, N. Milas, N. Vassilopoulos, O. Zormpa, P. Christiansen, P. Cupia\\l, P. Poussot, R. Johansson, R. Tarkeshian, R. Tsenov, S. Choubey, S. E. Tzamarias, S. Marangoni, S. Vihonen, T. Ekel\\\"of, T. Fukuda, Th. Geralis, T. Ohlsson, T. Tolba, T. W. Choi, V. Zeter","cross_cats":["physics.ins-det"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ex","submitted_at":"2025-03-19T14:22:48Z","title":"Classification of Electron and Muon Neutrino Events for the ESS$\\nu$SB Near Water Cherenkov Detector using Graph Neural Networks"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2503.15247","kind":"arxiv","version":4},"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:a641beced9817e09d46bee634311e60b7334befa2c77a9cf3ecc7607cc1fdb7c","target":"record","created_at":"2026-07-05T10:43:46Z","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":"e0d11c18065689fd52441dc7b9043c57240ac5d7fc539323398bd21a9043c515","cross_cats_sorted":["physics.ins-det"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ex","submitted_at":"2025-03-19T14:22:48Z","title_canon_sha256":"f75a0e3d3d084492f9144e959821d64a486497b0ee41f09a9b431e6f9444186e"},"schema_version":"1.0","source":{"id":"2503.15247","kind":"arxiv","version":4}},"canonical_sha256":"e83b14d6262836e71ea019ab9563b64c9db5ea8613563ebeceee4c0c87b6013d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e83b14d6262836e71ea019ab9563b64c9db5ea8613563ebeceee4c0c87b6013d","first_computed_at":"2026-07-05T10:43:46.011698Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:43:46.011698Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1jNKv+AlMC/3VQV3/M9lvXquWnqVKg0qt8Y0GkAGHQpWlKN81iZBNwkiYPFd/zx9KkAXp9IaspoejxxeIailDA==","signature_status":"signed_v1","signed_at":"2026-07-05T10:43:46.012194Z","signed_message":"canonical_sha256_bytes"},"source_id":"2503.15247","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a641beced9817e09d46bee634311e60b7334befa2c77a9cf3ecc7607cc1fdb7c","sha256:b832b3115a9b3bc636675324ee5a7a66d9144a4b9add66a907fe116114b851f2"],"state_sha256":"b2c66978659a1dcf6f4ce3028eceb939159204546c073146cce66b4285a3459d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zot7no89oL9k4Qu7R/F+wrM764VmxAE7BfMfDmDF7c23dLrAJ7XmBqZMCJP9OR6+HU47KTN0OKetjZpv01LlDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-22T19:39:16.444187Z","bundle_sha256":"65b466c68721fdf3f8c08009df7e43b401606c885e1e454c17ac0aad226e3b48"}}