{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:KRWSAK75POEKZO2ETX3WCXTZKP","short_pith_number":"pith:KRWSAK75","canonical_record":{"source":{"id":"1907.06610","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-07-15T17:13:24Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"bca74dc7f58cef6dddf7374717449cf49357e6718fc2c1080a56a28d63eb9c85","abstract_canon_sha256":"3d15f247bb69bb50206c893dd7061f3c413d18441e2a04c5fe7da6425f6bc44c"},"schema_version":"1.0"},"canonical_sha256":"546d202bfd7b88acbb449df7615e7953dce24190c023d4dc849c1aaf07e3fe1a","source":{"kind":"arxiv","id":"1907.06610","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.06610","created_at":"2026-07-05T00:13:03Z"},{"alias_kind":"arxiv_version","alias_value":"1907.06610v2","created_at":"2026-07-05T00:13:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.06610","created_at":"2026-07-05T00:13:03Z"},{"alias_kind":"pith_short_12","alias_value":"KRWSAK75POEK","created_at":"2026-07-05T00:13:03Z"},{"alias_kind":"pith_short_16","alias_value":"KRWSAK75POEKZO2E","created_at":"2026-07-05T00:13:03Z"},{"alias_kind":"pith_short_8","alias_value":"KRWSAK75","created_at":"2026-07-05T00:13:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:KRWSAK75POEKZO2ETX3WCXTZKP","target":"record","payload":{"canonical_record":{"source":{"id":"1907.06610","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-07-15T17:13:24Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"bca74dc7f58cef6dddf7374717449cf49357e6718fc2c1080a56a28d63eb9c85","abstract_canon_sha256":"3d15f247bb69bb50206c893dd7061f3c413d18441e2a04c5fe7da6425f6bc44c"},"schema_version":"1.0"},"canonical_sha256":"546d202bfd7b88acbb449df7615e7953dce24190c023d4dc849c1aaf07e3fe1a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:13:03.298258Z","signature_b64":"KVhJ2M7LI+BaQkFuZzEENYyktkNbSMMC+BcUBaHFt99L7XgNTgBYOSdqIQAupGQQ/Ce6+oengkOabLCiU2veDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"546d202bfd7b88acbb449df7615e7953dce24190c023d4dc849c1aaf07e3fe1a","last_reissued_at":"2026-07-05T00:13:03.297763Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:13:03.297763Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1907.06610","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":"2026-07-05T00:13:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"f0xCYf99merAiXg4lZx3+Cf+gWHC+k6xVa3l8ZQVofFjOwQx9dut3DB7CEFaIIrc1jcA3ZgpTYrdV7ZRM+fOBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T23:15:07.295419Z"},"content_sha256":"5723aa400c491d75f3e4543381d37f5d93f3910d081dd04c8501c2272996afda","schema_version":"1.0","event_id":"sha256:5723aa400c491d75f3e4543381d37f5d93f3910d081dd04c8501c2272996afda"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:KRWSAK75POEKZO2ETX3WCXTZKP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Ambiguities of the principle of maximum conformality procedure for hadron collider processes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"Alexander Mitov, Herschel A. Chawdhry","submitted_at":"2019-07-15T17:13:24Z","abstract_excerpt":"In any calculation in perturbative Quantum Chromodynamics (QCD) a choice needs to be made for the unphysical renormalisation scale, $\\mu_R$. The Brodsky-Lepage-Mackenzie/Principle of Maximum Conformality (BLM/PMC) scale-setting procedure is one proposed method for selecting this scale. In this work we identify three ambiguities in the BLM/PMC procedure itself. Their numerical impact is studied using the example of the total cross-section for $t\\bar{t}$ production through Next-to-Next-to-Leading Order in QCD. One ambiguity is the arbitrary choice of the value of the highest-order PMC scale. The"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.06610","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1907.06610/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":"2026-07-05T00:13:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+1XqIMYD5N7lk/9nd3t7f6bIUipC3Bv7Ov4hIlVsFf2Ss+iEmW0/Xna3MrVH4gMVYYE78ftV5W6ymYj4UiDoBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T23:15:07.295802Z"},"content_sha256":"01aba838d84ceecf401b9614c31c0e74feeef2f3a572e76c290c155b4e5ef560","schema_version":"1.0","event_id":"sha256:01aba838d84ceecf401b9614c31c0e74feeef2f3a572e76c290c155b4e5ef560"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KRWSAK75POEKZO2ETX3WCXTZKP/bundle.json","state_url":"https://pith.science/pith/KRWSAK75POEKZO2ETX3WCXTZKP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KRWSAK75POEKZO2ETX3WCXTZKP/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":"2026-07-06T23:15:07Z","links":{"resolver":"https://pith.science/pith/KRWSAK75POEKZO2ETX3WCXTZKP","bundle":"https://pith.science/pith/KRWSAK75POEKZO2ETX3WCXTZKP/bundle.json","state":"https://pith.science/pith/KRWSAK75POEKZO2ETX3WCXTZKP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KRWSAK75POEKZO2ETX3WCXTZKP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:KRWSAK75POEKZO2ETX3WCXTZKP","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":"3d15f247bb69bb50206c893dd7061f3c413d18441e2a04c5fe7da6425f6bc44c","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-07-15T17:13:24Z","title_canon_sha256":"bca74dc7f58cef6dddf7374717449cf49357e6718fc2c1080a56a28d63eb9c85"},"schema_version":"1.0","source":{"id":"1907.06610","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.06610","created_at":"2026-07-05T00:13:03Z"},{"alias_kind":"arxiv_version","alias_value":"1907.06610v2","created_at":"2026-07-05T00:13:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.06610","created_at":"2026-07-05T00:13:03Z"},{"alias_kind":"pith_short_12","alias_value":"KRWSAK75POEK","created_at":"2026-07-05T00:13:03Z"},{"alias_kind":"pith_short_16","alias_value":"KRWSAK75POEKZO2E","created_at":"2026-07-05T00:13:03Z"},{"alias_kind":"pith_short_8","alias_value":"KRWSAK75","created_at":"2026-07-05T00:13:03Z"}],"graph_snapshots":[{"event_id":"sha256:01aba838d84ceecf401b9614c31c0e74feeef2f3a572e76c290c155b4e5ef560","target":"graph","created_at":"2026-07-05T00:13:03Z","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/1907.06610/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In any calculation in perturbative Quantum Chromodynamics (QCD) a choice needs to be made for the unphysical renormalisation scale, $\\mu_R$. The Brodsky-Lepage-Mackenzie/Principle of Maximum Conformality (BLM/PMC) scale-setting procedure is one proposed method for selecting this scale. In this work we identify three ambiguities in the BLM/PMC procedure itself. Their numerical impact is studied using the example of the total cross-section for $t\\bar{t}$ production through Next-to-Next-to-Leading Order in QCD. One ambiguity is the arbitrary choice of the value of the highest-order PMC scale. The","authors_text":"Alexander Mitov, Herschel A. Chawdhry","cross_cats":["hep-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-07-15T17:13:24Z","title":"Ambiguities of the principle of maximum conformality procedure for hadron collider processes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.06610","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":"sha256:5723aa400c491d75f3e4543381d37f5d93f3910d081dd04c8501c2272996afda","target":"record","created_at":"2026-07-05T00:13:03Z","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":"3d15f247bb69bb50206c893dd7061f3c413d18441e2a04c5fe7da6425f6bc44c","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-07-15T17:13:24Z","title_canon_sha256":"bca74dc7f58cef6dddf7374717449cf49357e6718fc2c1080a56a28d63eb9c85"},"schema_version":"1.0","source":{"id":"1907.06610","kind":"arxiv","version":2}},"canonical_sha256":"546d202bfd7b88acbb449df7615e7953dce24190c023d4dc849c1aaf07e3fe1a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"546d202bfd7b88acbb449df7615e7953dce24190c023d4dc849c1aaf07e3fe1a","first_computed_at":"2026-07-05T00:13:03.297763Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:13:03.297763Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"KVhJ2M7LI+BaQkFuZzEENYyktkNbSMMC+BcUBaHFt99L7XgNTgBYOSdqIQAupGQQ/Ce6+oengkOabLCiU2veDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T00:13:03.298258Z","signed_message":"canonical_sha256_bytes"},"source_id":"1907.06610","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5723aa400c491d75f3e4543381d37f5d93f3910d081dd04c8501c2272996afda","sha256:01aba838d84ceecf401b9614c31c0e74feeef2f3a572e76c290c155b4e5ef560"],"state_sha256":"c2b30e344028e0f225d67e3d42664238ac054b79133d33695ad5f8decce24e10"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ITmlrTLshxkGy2COGW46crm6EAvtmgz36oK+JKNi51P4anyIQliRKM8t0U5i8Oxk31nSLllGjU3cG9k891n8Bg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-06T23:15:07.297864Z","bundle_sha256":"a29a2b67317fbfb615c6562ca222da11eb19749eed47d18921e7d55b994ccc38"}}