{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:G3OLPFBH56DU6TW7UFCYIWBP3A","short_pith_number":"pith:G3OLPFBH","canonical_record":{"source":{"id":"1004.5523","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2010-04-30T13:23:26Z","cross_cats_sorted":[],"title_canon_sha256":"9c1644ac5302308eba913c0a5956796292fbfbcf088f51d0a7bc9c89537fb4f4","abstract_canon_sha256":"aca86f9ba549bb82fafe932f5ffa0e31311cbb996caa112466056dbaa07ef67f"},"schema_version":"1.0"},"canonical_sha256":"36dcb79427ef874f4edfa14584582fd827d379afc7d8c80db0de521a75c5bef0","source":{"kind":"arxiv","id":"1004.5523","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1004.5523","created_at":"2026-05-18T02:07:44Z"},{"alias_kind":"arxiv_version","alias_value":"1004.5523v2","created_at":"2026-05-18T02:07:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1004.5523","created_at":"2026-05-18T02:07:44Z"},{"alias_kind":"pith_short_12","alias_value":"G3OLPFBH56DU","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_16","alias_value":"G3OLPFBH56DU6TW7","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_8","alias_value":"G3OLPFBH","created_at":"2026-05-18T12:26:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:G3OLPFBH56DU6TW7UFCYIWBP3A","target":"record","payload":{"canonical_record":{"source":{"id":"1004.5523","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2010-04-30T13:23:26Z","cross_cats_sorted":[],"title_canon_sha256":"9c1644ac5302308eba913c0a5956796292fbfbcf088f51d0a7bc9c89537fb4f4","abstract_canon_sha256":"aca86f9ba549bb82fafe932f5ffa0e31311cbb996caa112466056dbaa07ef67f"},"schema_version":"1.0"},"canonical_sha256":"36dcb79427ef874f4edfa14584582fd827d379afc7d8c80db0de521a75c5bef0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:07:44.504662Z","signature_b64":"tjgkmD8Jxm0YM3k4mWkYclr2Z2JpHrIZxbbTuvgvTXS7ycuef64IERYVOlQeHkvvPvxCLrcTtrfImrFo5coSAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"36dcb79427ef874f4edfa14584582fd827d379afc7d8c80db0de521a75c5bef0","last_reissued_at":"2026-05-18T02:07:44.503870Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:07:44.503870Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1004.5523","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":"2026-05-18T02:07:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Z5zSy2ax7DACzvAC0GO3kWUjLNN02LIpawIjIjMaYDPTsY7pFGK6WXtXJLr/Q51Xz8kH9w92+L2GWI73VR7NCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T11:51:09.810985Z"},"content_sha256":"2fbcc9d7aaf23c13b9d76f9aac56fc56fa704596484e2ced483a33a927a6ca7d","schema_version":"1.0","event_id":"sha256:2fbcc9d7aaf23c13b9d76f9aac56fc56fa704596484e2ced483a33a927a6ca7d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:G3OLPFBH56DU6TW7UFCYIWBP3A","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"J/psi production in proton-nucleus collisions at 158 and 400 GeV","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A. Colla, A. David, A. de Falco, A. Devaux, A. Ferretti, A. Foerster, A. Guichard, A. Masoni, A. Neves, A. Uras, B. Chaurand, C. Cicalo, C. Lourenco, C. Oppedisano, E. Radermacher, E. Scomparin, F. Manso, G. Puddu, G. Usai, H. En'yo, H. Gulkanian, H. J. Specht, H. K. Woehri (NA60 Collaboration), H. Ohnishi, J. Castor, J. Fargeix, J. Lozano, J. M. Heuser, J. Seixas, K. Banicz, L. Ducroux, M. Floris, M. Keil, N. Guettet, P. Cortese, P. Force, P. Martins, P. Parracho, P. Pillot, P. Ramalhete, P. Rosinsky, P. Sonderegger, R. Arnaldi, R. Shahoyan, R. Tieulent, R. Veenhof, S. Damjanovic, S. Serci, T. Poghosyan, W. Chen, Z. Li","submitted_at":"2010-04-30T13:23:26Z","abstract_excerpt":"The NA60 experiment has studied J/psi production in p-A collisions at 158 and 400 GeV, at the CERN SPS. Nuclear effects on the J/psi yield have been estimated from the A-dependence of the production cross section ratios sigma_{J/psi}^{A}/sigma_{J/psi}^{Be} (A=Al, Cu, In, W, Pb, U). We observe a significant nuclear suppression of the J/psi yield per nucleon-nucleon collision, with a larger effect at lower incident energy, and we compare this result with previous observations by other fixed-target experiments. An attempt to disentangle the different contributions to the observed suppression has "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1004.5523","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":"2026-05-18T02:07:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EWZp9zV5TlvxN+Y7cuNyvmaTjohn71N1ZCOiv7hI08ilm4+s0Wh8Ohsu4Pe48PJjGUFzJ1Y6fQOxJ3peB1/1Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T11:51:09.811527Z"},"content_sha256":"dd3de62177de2690863a52f2c42a6ffc94c7c75e935a526a76882def0a7173f3","schema_version":"1.0","event_id":"sha256:dd3de62177de2690863a52f2c42a6ffc94c7c75e935a526a76882def0a7173f3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/G3OLPFBH56DU6TW7UFCYIWBP3A/bundle.json","state_url":"https://pith.science/pith/G3OLPFBH56DU6TW7UFCYIWBP3A/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/G3OLPFBH56DU6TW7UFCYIWBP3A/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":"2026-05-22T11:51:09Z","links":{"resolver":"https://pith.science/pith/G3OLPFBH56DU6TW7UFCYIWBP3A","bundle":"https://pith.science/pith/G3OLPFBH56DU6TW7UFCYIWBP3A/bundle.json","state":"https://pith.science/pith/G3OLPFBH56DU6TW7UFCYIWBP3A/state.json","well_known_bundle":"https://pith.science/.well-known/pith/G3OLPFBH56DU6TW7UFCYIWBP3A/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:G3OLPFBH56DU6TW7UFCYIWBP3A","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":"aca86f9ba549bb82fafe932f5ffa0e31311cbb996caa112466056dbaa07ef67f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2010-04-30T13:23:26Z","title_canon_sha256":"9c1644ac5302308eba913c0a5956796292fbfbcf088f51d0a7bc9c89537fb4f4"},"schema_version":"1.0","source":{"id":"1004.5523","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1004.5523","created_at":"2026-05-18T02:07:44Z"},{"alias_kind":"arxiv_version","alias_value":"1004.5523v2","created_at":"2026-05-18T02:07:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1004.5523","created_at":"2026-05-18T02:07:44Z"},{"alias_kind":"pith_short_12","alias_value":"G3OLPFBH56DU","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_16","alias_value":"G3OLPFBH56DU6TW7","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_8","alias_value":"G3OLPFBH","created_at":"2026-05-18T12:26:07Z"}],"graph_snapshots":[{"event_id":"sha256:dd3de62177de2690863a52f2c42a6ffc94c7c75e935a526a76882def0a7173f3","target":"graph","created_at":"2026-05-18T02:07:44Z","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 NA60 experiment has studied J/psi production in p-A collisions at 158 and 400 GeV, at the CERN SPS. Nuclear effects on the J/psi yield have been estimated from the A-dependence of the production cross section ratios sigma_{J/psi}^{A}/sigma_{J/psi}^{Be} (A=Al, Cu, In, W, Pb, U). We observe a significant nuclear suppression of the J/psi yield per nucleon-nucleon collision, with a larger effect at lower incident energy, and we compare this result with previous observations by other fixed-target experiments. An attempt to disentangle the different contributions to the observed suppression has ","authors_text":"A. Colla, A. David, A. de Falco, A. Devaux, A. Ferretti, A. Foerster, A. Guichard, A. Masoni, A. Neves, A. Uras, B. Chaurand, C. Cicalo, C. Lourenco, C. Oppedisano, E. Radermacher, E. Scomparin, F. Manso, G. Puddu, G. Usai, H. En'yo, H. Gulkanian, H. J. Specht, H. K. Woehri (NA60 Collaboration), H. Ohnishi, J. Castor, J. Fargeix, J. Lozano, J. M. Heuser, J. Seixas, K. Banicz, L. Ducroux, M. Floris, M. Keil, N. Guettet, P. Cortese, P. Force, P. Martins, P. Parracho, P. Pillot, P. Ramalhete, P. Rosinsky, P. Sonderegger, R. Arnaldi, R. Shahoyan, R. Tieulent, R. Veenhof, S. Damjanovic, S. Serci, T. Poghosyan, W. Chen, Z. Li","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2010-04-30T13:23:26Z","title":"J/psi production in proton-nucleus collisions at 158 and 400 GeV"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1004.5523","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":"sha256:2fbcc9d7aaf23c13b9d76f9aac56fc56fa704596484e2ced483a33a927a6ca7d","target":"record","created_at":"2026-05-18T02:07:44Z","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":"aca86f9ba549bb82fafe932f5ffa0e31311cbb996caa112466056dbaa07ef67f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2010-04-30T13:23:26Z","title_canon_sha256":"9c1644ac5302308eba913c0a5956796292fbfbcf088f51d0a7bc9c89537fb4f4"},"schema_version":"1.0","source":{"id":"1004.5523","kind":"arxiv","version":2}},"canonical_sha256":"36dcb79427ef874f4edfa14584582fd827d379afc7d8c80db0de521a75c5bef0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"36dcb79427ef874f4edfa14584582fd827d379afc7d8c80db0de521a75c5bef0","first_computed_at":"2026-05-18T02:07:44.503870Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:07:44.503870Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tjgkmD8Jxm0YM3k4mWkYclr2Z2JpHrIZxbbTuvgvTXS7ycuef64IERYVOlQeHkvvPvxCLrcTtrfImrFo5coSAA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:07:44.504662Z","signed_message":"canonical_sha256_bytes"},"source_id":"1004.5523","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2fbcc9d7aaf23c13b9d76f9aac56fc56fa704596484e2ced483a33a927a6ca7d","sha256:dd3de62177de2690863a52f2c42a6ffc94c7c75e935a526a76882def0a7173f3"],"state_sha256":"c4ef289c4986ecdebdfd86aaf484946e095bf558e9952e06ef4ef1b64a286f17"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pZY87WHouaqcl+/zj3Fx9wFfOacQ1DYXJuxosVTILKYTSPuk5tHJ0xibugLy3+665mrX46781XRDQ7FuZ7r/Cg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-22T11:51:09.813869Z","bundle_sha256":"a611f62baa864ecaac571bcfe1355305183d870859975b1cee2d13d2bad7b49a"}}