{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:QP2CL7YUQ2RXAAKWTOLHGE543R","short_pith_number":"pith:QP2CL7YU","canonical_record":{"source":{"id":"2604.28164","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2026-04-30T17:48:47Z","cross_cats_sorted":["hep-ex","hep-lat","nucl-ex","nucl-th"],"title_canon_sha256":"2c619d69c36d07098dd0045de9e1f916aa3e1f93ffadead27d3caaabd81bd2b7","abstract_canon_sha256":"640bccbba29ce675ef375536a5843a5faf81892c64da245849826cc3bead183b"},"schema_version":"1.0"},"canonical_sha256":"83f425ff1486a37001569b967313bcdc6fb9f49980cfc9e37f34343e5a09dbb2","source":{"kind":"arxiv","id":"2604.28164","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2604.28164","created_at":"2026-06-05T01:14:39Z"},{"alias_kind":"arxiv_version","alias_value":"2604.28164v2","created_at":"2026-06-05T01:14:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2604.28164","created_at":"2026-06-05T01:14:39Z"},{"alias_kind":"pith_short_12","alias_value":"QP2CL7YUQ2RX","created_at":"2026-06-05T01:14:39Z"},{"alias_kind":"pith_short_16","alias_value":"QP2CL7YUQ2RXAAKW","created_at":"2026-06-05T01:14:39Z"},{"alias_kind":"pith_short_8","alias_value":"QP2CL7YU","created_at":"2026-06-05T01:14:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:QP2CL7YUQ2RXAAKWTOLHGE543R","target":"record","payload":{"canonical_record":{"source":{"id":"2604.28164","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2026-04-30T17:48:47Z","cross_cats_sorted":["hep-ex","hep-lat","nucl-ex","nucl-th"],"title_canon_sha256":"2c619d69c36d07098dd0045de9e1f916aa3e1f93ffadead27d3caaabd81bd2b7","abstract_canon_sha256":"640bccbba29ce675ef375536a5843a5faf81892c64da245849826cc3bead183b"},"schema_version":"1.0"},"canonical_sha256":"83f425ff1486a37001569b967313bcdc6fb9f49980cfc9e37f34343e5a09dbb2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-05T01:14:39.738663Z","signature_b64":"b9fllQYZWgvFvuK9wLIoIr+fEyiTTGxerVFr62Z5bGhZyrHh86wUqWXP0lrrgEK663qmFqBOAEEQkZGEnQPgBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"83f425ff1486a37001569b967313bcdc6fb9f49980cfc9e37f34343e5a09dbb2","last_reissued_at":"2026-06-05T01:14:39.737871Z","signature_status":"signed_v1","first_computed_at":"2026-06-05T01:14:39.737871Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2604.28164","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":"2026-06-05T01:14:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"G/mxrIUaqVkNifaOshFxYV4VGxOut5R36iBDP0SJej/LfO+Gl0BRWB7NiNVbWMeDqA92gkSR7riTJUoJW1+6Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-02T20:16:33.345372Z"},"content_sha256":"db11b4cd3d891520758d7804003ed4d052690c8f0e96462eb064b6f7a2a27520","schema_version":"1.0","event_id":"sha256:db11b4cd3d891520758d7804003ed4d052690c8f0e96462eb064b6f7a2a27520"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:QP2CL7YUQ2RXAAKWTOLHGE543R","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Deeply virtual pion production through two-loop order","license":"http://creativecommons.org/licenses/by/4.0/","headline":"The first NNLO QCD calculation of deeply virtual pion production finds substantial positive two-loop corrections that improve agreement with JLab data.","cross_cats":["hep-ex","hep-lat","nucl-ex","nucl-th"],"primary_cat":"hep-ph","authors_text":"Feng Feng, Guang Tang, Qin-Tao Song, Wen Chen, Yu Jia, Zhe-Yu Wang","submitted_at":"2026-04-30T17:48:47Z","abstract_excerpt":"Deeply virtual meson production (DVMP) is among the most prominent channels to extract the nucleon's generalized parton distributions (GPDs) at $ep$ scattering facilities such as {\\tt JLab} and the upcoming {\\tt EIC/EicC} experiments, which plays a vital role in unravelling the three-dimensional internal structure of nucleon. In this work we calculate for the first time the next-to-next-to-leading order (NNLO) QCD radiative corrections to the DV$\\pi$P processes $\\gamma_L^* p\\to \\pi^+ n$ and $\\gamma_L^* p\\to \\pi^0 p$ in the generalized Bjorken limit $Q^2\\gg \\vert t\\vert, \\Lambda_{\\text{QCD}}^2$"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"We calculate for the first time the next-to-next-to-leading order (NNLO) QCD radiative corrections to the DVπP processes γ_L^* p → π^+ n and γ_L^* p → π^0 p ... The impact of the two-loop QCD corrections appears to be positive and substantial, including which considerably improves the agreement between the perturbative QCD prediction and the available JLab data.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The leading-twist collinear factorization framework remains valid and higher-twist power corrections are negligible throughout the kinematic region Q^2 ≫ |t|, Λ_QCD^2 where the NNLO corrections are applied.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"The first NNLO QCD corrections to longitudinal deeply virtual pion production are computed and shown to substantially improve agreement with JLab data.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"The first NNLO QCD calculation of deeply virtual pion production finds substantial positive two-loop corrections that improve agreement with JLab data.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"49edb2524b11f110fae93f8117da070807165c826d7ace80d45396d2d3f2e48a"},"source":{"id":"2604.28164","kind":"arxiv","version":2},"verdict":{"id":"b1e312b5-9123-4200-b186-a2a86c6ffa2d","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-07T05:56:11.445866Z","strongest_claim":"We calculate for the first time the next-to-next-to-leading order (NNLO) QCD radiative corrections to the DVπP processes γ_L^* p → π^+ n and γ_L^* p → π^0 p ... The impact of the two-loop QCD corrections appears to be positive and substantial, including which considerably improves the agreement between the perturbative QCD prediction and the available JLab data.","one_line_summary":"The first NNLO QCD corrections to longitudinal deeply virtual pion production are computed and shown to substantially improve agreement with JLab data.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The leading-twist collinear factorization framework remains valid and higher-twist power corrections are negligible throughout the kinematic region Q^2 ≫ |t|, Λ_QCD^2 where the NNLO corrections are applied.","pith_extraction_headline":"The first NNLO QCD calculation of deeply virtual pion production finds substantial positive two-loop corrections that improve agreement with JLab data."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2604.28164/integrity.json","findings":[],"available":true,"detectors_run":[{"name":"ai_meta_artifact","ran_at":"2026-05-20T20:39:45.761462Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_compliance","ran_at":"2026-05-19T18:33:38.509155Z","status":"completed","version":"1.0.0","findings_count":0}],"snapshot_sha256":"20afd029dc1b69f83067cbce3a28a231bc6d60bc02493af86f8db0adde7374ee"},"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":"b1e312b5-9123-4200-b186-a2a86c6ffa2d"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-06-05T01:14:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Bsol+fRo3oy0AMYdajEiQV8Cp6PiTS5AjX9w6N6WXLrU5IP3XCr8ITpJcHWjFgcRD5CPNIP6HPzTEN1WLGv+Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-02T20:16:33.346514Z"},"content_sha256":"9ae7ea959f20ae870d5756c25291c294d5e7b0011faf9e5089adef4ea99af1d5","schema_version":"1.0","event_id":"sha256:9ae7ea959f20ae870d5756c25291c294d5e7b0011faf9e5089adef4ea99af1d5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QP2CL7YUQ2RXAAKWTOLHGE543R/bundle.json","state_url":"https://pith.science/pith/QP2CL7YUQ2RXAAKWTOLHGE543R/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QP2CL7YUQ2RXAAKWTOLHGE543R/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":"2026-08-02T20:16:33Z","links":{"resolver":"https://pith.science/pith/QP2CL7YUQ2RXAAKWTOLHGE543R","bundle":"https://pith.science/pith/QP2CL7YUQ2RXAAKWTOLHGE543R/bundle.json","state":"https://pith.science/pith/QP2CL7YUQ2RXAAKWTOLHGE543R/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QP2CL7YUQ2RXAAKWTOLHGE543R/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:QP2CL7YUQ2RXAAKWTOLHGE543R","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":"640bccbba29ce675ef375536a5843a5faf81892c64da245849826cc3bead183b","cross_cats_sorted":["hep-ex","hep-lat","nucl-ex","nucl-th"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2026-04-30T17:48:47Z","title_canon_sha256":"2c619d69c36d07098dd0045de9e1f916aa3e1f93ffadead27d3caaabd81bd2b7"},"schema_version":"1.0","source":{"id":"2604.28164","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2604.28164","created_at":"2026-06-05T01:14:39Z"},{"alias_kind":"arxiv_version","alias_value":"2604.28164v2","created_at":"2026-06-05T01:14:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2604.28164","created_at":"2026-06-05T01:14:39Z"},{"alias_kind":"pith_short_12","alias_value":"QP2CL7YUQ2RX","created_at":"2026-06-05T01:14:39Z"},{"alias_kind":"pith_short_16","alias_value":"QP2CL7YUQ2RXAAKW","created_at":"2026-06-05T01:14:39Z"},{"alias_kind":"pith_short_8","alias_value":"QP2CL7YU","created_at":"2026-06-05T01:14:39Z"}],"graph_snapshots":[{"event_id":"sha256:9ae7ea959f20ae870d5756c25291c294d5e7b0011faf9e5089adef4ea99af1d5","target":"graph","created_at":"2026-06-05T01:14:39Z","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":4,"items":[{"attestation":"unclaimed","claim_id":"C1","kind":"strongest_claim","source":"verdict.strongest_claim","status":"machine_extracted","text":"We calculate for the first time the next-to-next-to-leading order (NNLO) QCD radiative corrections to the DVπP processes γ_L^* p → π^+ n and γ_L^* p → π^0 p ... The impact of the two-loop QCD corrections appears to be positive and substantial, including which considerably improves the agreement between the perturbative QCD prediction and the available JLab data."},{"attestation":"unclaimed","claim_id":"C2","kind":"weakest_assumption","source":"verdict.weakest_assumption","status":"machine_extracted","text":"The leading-twist collinear factorization framework remains valid and higher-twist power corrections are negligible throughout the kinematic region Q^2 ≫ |t|, Λ_QCD^2 where the NNLO corrections are applied."},{"attestation":"unclaimed","claim_id":"C3","kind":"one_line_summary","source":"verdict.one_line_summary","status":"machine_extracted","text":"The first NNLO QCD corrections to longitudinal deeply virtual pion production are computed and shown to substantially improve agreement with JLab data."},{"attestation":"unclaimed","claim_id":"C4","kind":"headline","source":"verdict.pith_extraction.headline","status":"machine_extracted","text":"The first NNLO QCD calculation of deeply virtual pion production finds substantial positive two-loop corrections that improve agreement with JLab data."}],"snapshot_sha256":"49edb2524b11f110fae93f8117da070807165c826d7ace80d45396d2d3f2e48a"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[{"findings_count":0,"name":"ai_meta_artifact","ran_at":"2026-05-20T20:39:45.761462Z","status":"completed","version":"1.0.0"},{"findings_count":0,"name":"doi_compliance","ran_at":"2026-05-19T18:33:38.509155Z","status":"completed","version":"1.0.0"}],"endpoint":"/pith/2604.28164/integrity.json","findings":[],"snapshot_sha256":"20afd029dc1b69f83067cbce3a28a231bc6d60bc02493af86f8db0adde7374ee","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Deeply virtual meson production (DVMP) is among the most prominent channels to extract the nucleon's generalized parton distributions (GPDs) at $ep$ scattering facilities such as {\\tt JLab} and the upcoming {\\tt EIC/EicC} experiments, which plays a vital role in unravelling the three-dimensional internal structure of nucleon. In this work we calculate for the first time the next-to-next-to-leading order (NNLO) QCD radiative corrections to the DV$\\pi$P processes $\\gamma_L^* p\\to \\pi^+ n$ and $\\gamma_L^* p\\to \\pi^0 p$ in the generalized Bjorken limit $Q^2\\gg \\vert t\\vert, \\Lambda_{\\text{QCD}}^2$","authors_text":"Feng Feng, Guang Tang, Qin-Tao Song, Wen Chen, Yu Jia, Zhe-Yu Wang","cross_cats":["hep-ex","hep-lat","nucl-ex","nucl-th"],"headline":"The first NNLO QCD calculation of deeply virtual pion production finds substantial positive two-loop corrections that improve agreement with JLab data.","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2026-04-30T17:48:47Z","title":"Deeply virtual pion production through two-loop order"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2604.28164","kind":"arxiv","version":2},"verdict":{"created_at":"2026-05-07T05:56:11.445866Z","id":"b1e312b5-9123-4200-b186-a2a86c6ffa2d","model_set":{"reader":"grok-4.3"},"one_line_summary":"The first NNLO QCD corrections to longitudinal deeply virtual pion production are computed and shown to substantially improve agreement with JLab data.","pipeline_version":"pith-pipeline@v0.9.0","pith_extraction_headline":"The first NNLO QCD calculation of deeply virtual pion production finds substantial positive two-loop corrections that improve agreement with JLab data.","strongest_claim":"We calculate for the first time the next-to-next-to-leading order (NNLO) QCD radiative corrections to the DVπP processes γ_L^* p → π^+ n and γ_L^* p → π^0 p ... The impact of the two-loop QCD corrections appears to be positive and substantial, including which considerably improves the agreement between the perturbative QCD prediction and the available JLab data.","weakest_assumption":"The leading-twist collinear factorization framework remains valid and higher-twist power corrections are negligible throughout the kinematic region Q^2 ≫ |t|, Λ_QCD^2 where the NNLO corrections are applied."}},"verdict_id":"b1e312b5-9123-4200-b186-a2a86c6ffa2d"}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:db11b4cd3d891520758d7804003ed4d052690c8f0e96462eb064b6f7a2a27520","target":"record","created_at":"2026-06-05T01:14:39Z","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":"640bccbba29ce675ef375536a5843a5faf81892c64da245849826cc3bead183b","cross_cats_sorted":["hep-ex","hep-lat","nucl-ex","nucl-th"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2026-04-30T17:48:47Z","title_canon_sha256":"2c619d69c36d07098dd0045de9e1f916aa3e1f93ffadead27d3caaabd81bd2b7"},"schema_version":"1.0","source":{"id":"2604.28164","kind":"arxiv","version":2}},"canonical_sha256":"83f425ff1486a37001569b967313bcdc6fb9f49980cfc9e37f34343e5a09dbb2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"83f425ff1486a37001569b967313bcdc6fb9f49980cfc9e37f34343e5a09dbb2","first_computed_at":"2026-06-05T01:14:39.737871Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-05T01:14:39.737871Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"b9fllQYZWgvFvuK9wLIoIr+fEyiTTGxerVFr62Z5bGhZyrHh86wUqWXP0lrrgEK663qmFqBOAEEQkZGEnQPgBg==","signature_status":"signed_v1","signed_at":"2026-06-05T01:14:39.738663Z","signed_message":"canonical_sha256_bytes"},"source_id":"2604.28164","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:db11b4cd3d891520758d7804003ed4d052690c8f0e96462eb064b6f7a2a27520","sha256:9ae7ea959f20ae870d5756c25291c294d5e7b0011faf9e5089adef4ea99af1d5"],"state_sha256":"e57dca52fd43d800947efe5a4e1da60dabe7341342878987b083abd56e4baa63"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XhR8eO66QM6A7DajsAaluq23isTjgbrhcAFOPXfHH4FygZ8yv91KBJ4ZnGKLP5Uv/BSeu94pizE8nB26h0gEDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-02T20:16:33.351714Z","bundle_sha256":"11b9113e01237ac1bc7c93c9994f73cb9a25663ed9c553f875701318915e48db"}}