{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:YPQUAITADL6ZXPWKBRGFZEAB23","short_pith_number":"pith:YPQUAITA","canonical_record":{"source":{"id":"1202.2812","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2012-02-13T18:35:58Z","cross_cats_sorted":[],"title_canon_sha256":"45ebacf590921904192c37e27b9de8d72eae8d36b9d8cdc55ef81a74a68ec677","abstract_canon_sha256":"c6aa393057d65e2e11833ac15e97ad8721de845db7b89906e3a5a105c566d75a"},"schema_version":"1.0"},"canonical_sha256":"c3e14022601afd9bbeca0c4c5c9001d6f6128c8cae2195a3f6429f7cd9bfe070","source":{"kind":"arxiv","id":"1202.2812","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1202.2812","created_at":"2026-05-18T03:22:52Z"},{"alias_kind":"arxiv_version","alias_value":"1202.2812v1","created_at":"2026-05-18T03:22:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1202.2812","created_at":"2026-05-18T03:22:52Z"},{"alias_kind":"pith_short_12","alias_value":"YPQUAITADL6Z","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_16","alias_value":"YPQUAITADL6ZXPWK","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_8","alias_value":"YPQUAITA","created_at":"2026-05-18T12:27:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:YPQUAITADL6ZXPWKBRGFZEAB23","target":"record","payload":{"canonical_record":{"source":{"id":"1202.2812","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2012-02-13T18:35:58Z","cross_cats_sorted":[],"title_canon_sha256":"45ebacf590921904192c37e27b9de8d72eae8d36b9d8cdc55ef81a74a68ec677","abstract_canon_sha256":"c6aa393057d65e2e11833ac15e97ad8721de845db7b89906e3a5a105c566d75a"},"schema_version":"1.0"},"canonical_sha256":"c3e14022601afd9bbeca0c4c5c9001d6f6128c8cae2195a3f6429f7cd9bfe070","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:22:52.308571Z","signature_b64":"iZwa4g0QSPhQLFwfQO3/+HAw6GJ96YxBZgYO195mAIKgKbAPMrT8IA719+alQEIsfuv3OI9pzxRZIzfIdifqBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c3e14022601afd9bbeca0c4c5c9001d6f6128c8cae2195a3f6429f7cd9bfe070","last_reissued_at":"2026-05-18T03:22:52.308053Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:22:52.308053Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1202.2812","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:22:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pNVE57FetSHF/W0YYdLAXBMCj0j/AvtU2dhPo8CZkFtFkc7xTnGItaBx+ZRXvdaQA9+fdgWZSkSKkDKTFuONAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T03:22:18.865348Z"},"content_sha256":"bda84977bef89774d24894c1b1201b5fe622dc2c7457d50c9975751ad96c931d","schema_version":"1.0","event_id":"sha256:bda84977bef89774d24894c1b1201b5fe622dc2c7457d50c9975751ad96c931d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:YPQUAITADL6ZXPWKBRGFZEAB23","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Bimaximal mixing from lopsided neutrinos","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"K. Tamvakis, M. Paraskevas","submitted_at":"2012-02-13T18:35:58Z","abstract_excerpt":"We consider the problem of neutrino masses and mixing within the general framework of standard (type-I) seesaw models leading to three light neutrinos. Under the assumption of a hierarchical neutrino mass spectrum \\lambda^4: \\lambda : 1, consistent with present data, we examine possible lopsided patterns for the neutrino Yukawa couplings that can account for the observed mixing angles, including a small but non-vanishing |U_{e3}|. An embedding of the above within a general class of SO(10) models is also considered."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1202.2812","kind":"arxiv","version":1},"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":"2026-05-18T03:22:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"48voCMrntUpDlESbU1O5ILxALMJVJoNOYosJunhLY6Lx9NYT+laaUfsX24BvNksrLJwuv/zxCGOdmT+PJPfXCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T03:22:18.865977Z"},"content_sha256":"47324dde3d6981e7ff004ead6bdcdb2a7fac2b4eda3a47e0426957d0d42bc4dc","schema_version":"1.0","event_id":"sha256:47324dde3d6981e7ff004ead6bdcdb2a7fac2b4eda3a47e0426957d0d42bc4dc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YPQUAITADL6ZXPWKBRGFZEAB23/bundle.json","state_url":"https://pith.science/pith/YPQUAITADL6ZXPWKBRGFZEAB23/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YPQUAITADL6ZXPWKBRGFZEAB23/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":"2026-05-27T03:22:18Z","links":{"resolver":"https://pith.science/pith/YPQUAITADL6ZXPWKBRGFZEAB23","bundle":"https://pith.science/pith/YPQUAITADL6ZXPWKBRGFZEAB23/bundle.json","state":"https://pith.science/pith/YPQUAITADL6ZXPWKBRGFZEAB23/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YPQUAITADL6ZXPWKBRGFZEAB23/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:YPQUAITADL6ZXPWKBRGFZEAB23","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":"c6aa393057d65e2e11833ac15e97ad8721de845db7b89906e3a5a105c566d75a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2012-02-13T18:35:58Z","title_canon_sha256":"45ebacf590921904192c37e27b9de8d72eae8d36b9d8cdc55ef81a74a68ec677"},"schema_version":"1.0","source":{"id":"1202.2812","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1202.2812","created_at":"2026-05-18T03:22:52Z"},{"alias_kind":"arxiv_version","alias_value":"1202.2812v1","created_at":"2026-05-18T03:22:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1202.2812","created_at":"2026-05-18T03:22:52Z"},{"alias_kind":"pith_short_12","alias_value":"YPQUAITADL6Z","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_16","alias_value":"YPQUAITADL6ZXPWK","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_8","alias_value":"YPQUAITA","created_at":"2026-05-18T12:27:27Z"}],"graph_snapshots":[{"event_id":"sha256:47324dde3d6981e7ff004ead6bdcdb2a7fac2b4eda3a47e0426957d0d42bc4dc","target":"graph","created_at":"2026-05-18T03:22:52Z","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":"We consider the problem of neutrino masses and mixing within the general framework of standard (type-I) seesaw models leading to three light neutrinos. Under the assumption of a hierarchical neutrino mass spectrum \\lambda^4: \\lambda : 1, consistent with present data, we examine possible lopsided patterns for the neutrino Yukawa couplings that can account for the observed mixing angles, including a small but non-vanishing |U_{e3}|. An embedding of the above within a general class of SO(10) models is also considered.","authors_text":"K. Tamvakis, M. Paraskevas","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2012-02-13T18:35:58Z","title":"Bimaximal mixing from lopsided neutrinos"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1202.2812","kind":"arxiv","version":1},"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:bda84977bef89774d24894c1b1201b5fe622dc2c7457d50c9975751ad96c931d","target":"record","created_at":"2026-05-18T03:22:52Z","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":"c6aa393057d65e2e11833ac15e97ad8721de845db7b89906e3a5a105c566d75a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2012-02-13T18:35:58Z","title_canon_sha256":"45ebacf590921904192c37e27b9de8d72eae8d36b9d8cdc55ef81a74a68ec677"},"schema_version":"1.0","source":{"id":"1202.2812","kind":"arxiv","version":1}},"canonical_sha256":"c3e14022601afd9bbeca0c4c5c9001d6f6128c8cae2195a3f6429f7cd9bfe070","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c3e14022601afd9bbeca0c4c5c9001d6f6128c8cae2195a3f6429f7cd9bfe070","first_computed_at":"2026-05-18T03:22:52.308053Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:22:52.308053Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iZwa4g0QSPhQLFwfQO3/+HAw6GJ96YxBZgYO195mAIKgKbAPMrT8IA719+alQEIsfuv3OI9pzxRZIzfIdifqBg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:22:52.308571Z","signed_message":"canonical_sha256_bytes"},"source_id":"1202.2812","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bda84977bef89774d24894c1b1201b5fe622dc2c7457d50c9975751ad96c931d","sha256:47324dde3d6981e7ff004ead6bdcdb2a7fac2b4eda3a47e0426957d0d42bc4dc"],"state_sha256":"b84125fcda4d9a89dafe210f144e7bec38d22fdcb02d6685b3bf163fcf421d9d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cElj/dhC44MsQufxfcZrSilI5RXVhvmR6JxxZpmaltipMrxweeDejpaltqwHs5iHSddPHytpvr77yi/QOcXdCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T03:22:18.869520Z","bundle_sha256":"ab6a77a42475bf63c165cdd38aab6b4f4dd1921bbad3217e1f89fedcf8b4303f"}}