{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:HN5USNGTLBKDTO2V6YC4KZCM2J","short_pith_number":"pith:HN5USNGT","canonical_record":{"source":{"id":"1102.1973","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2011-02-09T21:00:01Z","cross_cats_sorted":["hep-ph"],"title_canon_sha256":"9d2a1003bb0bad41ceea14f828c0bea30b711591bc05f0c0c75e4b813b416788","abstract_canon_sha256":"a72dc9a1ebfe243015d0f1a2bc0caea5b127317e932b650565800b29028903d7"},"schema_version":"1.0"},"canonical_sha256":"3b7b4934d3585439bb55f605c5644cd254e8a3ed7f3ab6453d3508c0b6d05173","source":{"kind":"arxiv","id":"1102.1973","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1102.1973","created_at":"2026-05-18T02:03:14Z"},{"alias_kind":"arxiv_version","alias_value":"1102.1973v2","created_at":"2026-05-18T02:03:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1102.1973","created_at":"2026-05-18T02:03:14Z"},{"alias_kind":"pith_short_12","alias_value":"HN5USNGTLBKD","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_16","alias_value":"HN5USNGTLBKDTO2V","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_8","alias_value":"HN5USNGT","created_at":"2026-05-18T12:26:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:HN5USNGTLBKDTO2V6YC4KZCM2J","target":"record","payload":{"canonical_record":{"source":{"id":"1102.1973","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2011-02-09T21:00:01Z","cross_cats_sorted":["hep-ph"],"title_canon_sha256":"9d2a1003bb0bad41ceea14f828c0bea30b711591bc05f0c0c75e4b813b416788","abstract_canon_sha256":"a72dc9a1ebfe243015d0f1a2bc0caea5b127317e932b650565800b29028903d7"},"schema_version":"1.0"},"canonical_sha256":"3b7b4934d3585439bb55f605c5644cd254e8a3ed7f3ab6453d3508c0b6d05173","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:03:14.695466Z","signature_b64":"+MCxBHhS4BWlm12uMr5Hbi5AdQaUO/mRKX+Vb25hAUXY6jbaFZgzXxGFdUCAYkzTNtlCaeE+87Ay5TcLJGhgCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3b7b4934d3585439bb55f605c5644cd254e8a3ed7f3ab6453d3508c0b6d05173","last_reissued_at":"2026-05-18T02:03:14.694862Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:03:14.694862Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1102.1973","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":"2026-05-18T02:03:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YZvc9t4KcC9nmJEgYjJBHY1LumZ26BvwRE1r6JATReqITtMD5mtGF6l5iT/f53Ezwi7DSzVcfOwXdlOXPxSECQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T16:00:21.375970Z"},"content_sha256":"ca434764977a706171554eb97948d593bf49898413b092819d81417d6fe5970c","schema_version":"1.0","event_id":"sha256:ca434764977a706171554eb97948d593bf49898413b092819d81417d6fe5970c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:HN5USNGTLBKDTO2V6YC4KZCM2J","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Radiative Fermion Masses in Local D-Brane Models","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph"],"primary_cat":"hep-th","authors_text":"Anshuman Maharana, C.P. Burgess, Fernando Quevedo, Sven Krippendorf","submitted_at":"2011-02-09T21:00:01Z","abstract_excerpt":"In the context of D-brane model building, we present a realistic framework for generating fermion masses that are forbidden by global symmetries. We show that the string theoretical Large volume scenario circumvents the standard lore that fermion masses generated by loop effects are too small in generic gravity mediated scenarios. We argue that the fact that in toric singularity models, the up quark masses have always a zero eigenvalue, corresponding to the lightest generation, is due to the presence of approximate global symmetries that we explicitly identify in del Pezzo singularities. These"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1102.1973","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":"2026-05-18T02:03:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6FfKWu14S3NS56er2DTLuiPnlMpa/EoSToVJXAmofdDt3itlzhJo/ukerQaEYnrpxFeJ1ZzLzD08r8V5RnJMCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T16:00:21.376334Z"},"content_sha256":"3caec644cbfefba088f2d61c1a396d6ae229a359ef58559c1b8d9250a4470557","schema_version":"1.0","event_id":"sha256:3caec644cbfefba088f2d61c1a396d6ae229a359ef58559c1b8d9250a4470557"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HN5USNGTLBKDTO2V6YC4KZCM2J/bundle.json","state_url":"https://pith.science/pith/HN5USNGTLBKDTO2V6YC4KZCM2J/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HN5USNGTLBKDTO2V6YC4KZCM2J/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":"2026-06-09T16:00:21Z","links":{"resolver":"https://pith.science/pith/HN5USNGTLBKDTO2V6YC4KZCM2J","bundle":"https://pith.science/pith/HN5USNGTLBKDTO2V6YC4KZCM2J/bundle.json","state":"https://pith.science/pith/HN5USNGTLBKDTO2V6YC4KZCM2J/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HN5USNGTLBKDTO2V6YC4KZCM2J/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:HN5USNGTLBKDTO2V6YC4KZCM2J","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":"a72dc9a1ebfe243015d0f1a2bc0caea5b127317e932b650565800b29028903d7","cross_cats_sorted":["hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2011-02-09T21:00:01Z","title_canon_sha256":"9d2a1003bb0bad41ceea14f828c0bea30b711591bc05f0c0c75e4b813b416788"},"schema_version":"1.0","source":{"id":"1102.1973","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1102.1973","created_at":"2026-05-18T02:03:14Z"},{"alias_kind":"arxiv_version","alias_value":"1102.1973v2","created_at":"2026-05-18T02:03:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1102.1973","created_at":"2026-05-18T02:03:14Z"},{"alias_kind":"pith_short_12","alias_value":"HN5USNGTLBKD","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_16","alias_value":"HN5USNGTLBKDTO2V","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_8","alias_value":"HN5USNGT","created_at":"2026-05-18T12:26:30Z"}],"graph_snapshots":[{"event_id":"sha256:3caec644cbfefba088f2d61c1a396d6ae229a359ef58559c1b8d9250a4470557","target":"graph","created_at":"2026-05-18T02:03:14Z","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":"In the context of D-brane model building, we present a realistic framework for generating fermion masses that are forbidden by global symmetries. We show that the string theoretical Large volume scenario circumvents the standard lore that fermion masses generated by loop effects are too small in generic gravity mediated scenarios. We argue that the fact that in toric singularity models, the up quark masses have always a zero eigenvalue, corresponding to the lightest generation, is due to the presence of approximate global symmetries that we explicitly identify in del Pezzo singularities. These","authors_text":"Anshuman Maharana, C.P. Burgess, Fernando Quevedo, Sven Krippendorf","cross_cats":["hep-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2011-02-09T21:00:01Z","title":"Radiative Fermion Masses in Local D-Brane Models"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1102.1973","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:ca434764977a706171554eb97948d593bf49898413b092819d81417d6fe5970c","target":"record","created_at":"2026-05-18T02:03:14Z","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":"a72dc9a1ebfe243015d0f1a2bc0caea5b127317e932b650565800b29028903d7","cross_cats_sorted":["hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2011-02-09T21:00:01Z","title_canon_sha256":"9d2a1003bb0bad41ceea14f828c0bea30b711591bc05f0c0c75e4b813b416788"},"schema_version":"1.0","source":{"id":"1102.1973","kind":"arxiv","version":2}},"canonical_sha256":"3b7b4934d3585439bb55f605c5644cd254e8a3ed7f3ab6453d3508c0b6d05173","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3b7b4934d3585439bb55f605c5644cd254e8a3ed7f3ab6453d3508c0b6d05173","first_computed_at":"2026-05-18T02:03:14.694862Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:03:14.694862Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+MCxBHhS4BWlm12uMr5Hbi5AdQaUO/mRKX+Vb25hAUXY6jbaFZgzXxGFdUCAYkzTNtlCaeE+87Ay5TcLJGhgCA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:03:14.695466Z","signed_message":"canonical_sha256_bytes"},"source_id":"1102.1973","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ca434764977a706171554eb97948d593bf49898413b092819d81417d6fe5970c","sha256:3caec644cbfefba088f2d61c1a396d6ae229a359ef58559c1b8d9250a4470557"],"state_sha256":"dc966c65da61ed212a4c18414ec0dab30184ab086af00138a7856e7ec8b916e3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"X6NMOqEOrbsaKNH3o+HyROvjdcns6lnQlRfW2v/2ojLnxu11/QvfjdJGZEtzFSOqfDpLOuYNGPDCyDCfflmnBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T16:00:21.378402Z","bundle_sha256":"fbe76f4c13dc8592c83818432db2d2a78885a4cc1590c7d319a5e49d1e46db98"}}