{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:B5GSIPMLJP4Y3KJHMHOAE64MPX","short_pith_number":"pith:B5GSIPML","canonical_record":{"source":{"id":"1506.08530","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2015-06-29T07:52:06Z","cross_cats_sorted":[],"title_canon_sha256":"6268bdde6297c92806c0922aac50208e0e36c679c47e11001db65b015bdbd540","abstract_canon_sha256":"e012262fc49bd4d5fc228ea0259688fd111649d66077b3199c59151c38b6ee5c"},"schema_version":"1.0"},"canonical_sha256":"0f4d243d8b4bf98da92761dc027b8c7dec44a0109a0b1bf5a6971e4605b9addb","source":{"kind":"arxiv","id":"1506.08530","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1506.08530","created_at":"2026-05-18T01:37:44Z"},{"alias_kind":"arxiv_version","alias_value":"1506.08530v1","created_at":"2026-05-18T01:37:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.08530","created_at":"2026-05-18T01:37:44Z"},{"alias_kind":"pith_short_12","alias_value":"B5GSIPMLJP4Y","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_16","alias_value":"B5GSIPMLJP4Y3KJH","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_8","alias_value":"B5GSIPML","created_at":"2026-05-18T12:29:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:B5GSIPMLJP4Y3KJHMHOAE64MPX","target":"record","payload":{"canonical_record":{"source":{"id":"1506.08530","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2015-06-29T07:52:06Z","cross_cats_sorted":[],"title_canon_sha256":"6268bdde6297c92806c0922aac50208e0e36c679c47e11001db65b015bdbd540","abstract_canon_sha256":"e012262fc49bd4d5fc228ea0259688fd111649d66077b3199c59151c38b6ee5c"},"schema_version":"1.0"},"canonical_sha256":"0f4d243d8b4bf98da92761dc027b8c7dec44a0109a0b1bf5a6971e4605b9addb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:37:44.015753Z","signature_b64":"lUllE1ZVoqyy+uuC4pRvXhCNBlrl/zuJOoGBczEOgwMrYBkw0/newfxBZqg909aqMk+Uk6bTQBnUXGp3D3paAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0f4d243d8b4bf98da92761dc027b8c7dec44a0109a0b1bf5a6971e4605b9addb","last_reissued_at":"2026-05-18T01:37:44.014959Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:37:44.014959Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1506.08530","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":"2026-05-18T01:37:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"v5RBFqSl+wE1uMvezv8N2JDWc42Zp6G3Y41sAQ4BjOOGcARiFraIf/mUcuhBBsN/U6qflNEdc9BQ2ijp62EwCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T11:38:43.215188Z"},"content_sha256":"271bc7064205b95a1107522bf91a4cd28fe53b9bd1bd66267cf58ebf4540d222","schema_version":"1.0","event_id":"sha256:271bc7064205b95a1107522bf91a4cd28fe53b9bd1bd66267cf58ebf4540d222"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:B5GSIPMLJP4Y3KJHMHOAE64MPX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"$0\\nu\\beta\\beta$ and $2\\nu\\beta\\beta$ nuclear matrix elements in the interacting boson model with isospin restoration","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"F. Iachello, J. Barea, J. Kotila","submitted_at":"2015-06-29T07:52:06Z","abstract_excerpt":"We introduce a method for isospin restoration in the calculation of nuclear matrix elements (NME) for $0\\nu\\beta\\beta$ and $2\\nu\\beta\\beta$ decay within the framework of interacting boson model (IBM-2). With this method, we calculate NME for all processes of interest in $0\\nu\\beta^-\\beta^-$, $2\\nu\\beta^-\\beta^-$, and in $0\\nu\\beta^+\\beta^+$, $0\\nu\\beta^+ EC^+$, $R0\\nu ECEC$, $2\\nu\\beta^+\\beta^+$, $2\\nu\\beta^+EC$, and $2\\nu ECEC$. With this method, the Fermi (F) matrix elements for $2\\nu\\beta\\beta$ vanish, and those for $0\\nu\\beta\\beta$ are considerably reduced."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.08530","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":"2026-05-18T01:37:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3plsNcjG3eN42fvrywpwyObyqlEth3hb3b9LU44uBFx/B+j661tOB31f7YVAfPN16L0p4a2crGGJACD0QGKRAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T11:38:43.215818Z"},"content_sha256":"20b6e9ff0f7d0481137cfad8cb76475feb553f362c25a379eb7ea52ea26e6925","schema_version":"1.0","event_id":"sha256:20b6e9ff0f7d0481137cfad8cb76475feb553f362c25a379eb7ea52ea26e6925"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/B5GSIPMLJP4Y3KJHMHOAE64MPX/bundle.json","state_url":"https://pith.science/pith/B5GSIPMLJP4Y3KJHMHOAE64MPX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/B5GSIPMLJP4Y3KJHMHOAE64MPX/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":"2026-05-25T11:38:43Z","links":{"resolver":"https://pith.science/pith/B5GSIPMLJP4Y3KJHMHOAE64MPX","bundle":"https://pith.science/pith/B5GSIPMLJP4Y3KJHMHOAE64MPX/bundle.json","state":"https://pith.science/pith/B5GSIPMLJP4Y3KJHMHOAE64MPX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/B5GSIPMLJP4Y3KJHMHOAE64MPX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:B5GSIPMLJP4Y3KJHMHOAE64MPX","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":"e012262fc49bd4d5fc228ea0259688fd111649d66077b3199c59151c38b6ee5c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2015-06-29T07:52:06Z","title_canon_sha256":"6268bdde6297c92806c0922aac50208e0e36c679c47e11001db65b015bdbd540"},"schema_version":"1.0","source":{"id":"1506.08530","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1506.08530","created_at":"2026-05-18T01:37:44Z"},{"alias_kind":"arxiv_version","alias_value":"1506.08530v1","created_at":"2026-05-18T01:37:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.08530","created_at":"2026-05-18T01:37:44Z"},{"alias_kind":"pith_short_12","alias_value":"B5GSIPMLJP4Y","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_16","alias_value":"B5GSIPMLJP4Y3KJH","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_8","alias_value":"B5GSIPML","created_at":"2026-05-18T12:29:14Z"}],"graph_snapshots":[{"event_id":"sha256:20b6e9ff0f7d0481137cfad8cb76475feb553f362c25a379eb7ea52ea26e6925","target":"graph","created_at":"2026-05-18T01:37:44Z","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":"We introduce a method for isospin restoration in the calculation of nuclear matrix elements (NME) for $0\\nu\\beta\\beta$ and $2\\nu\\beta\\beta$ decay within the framework of interacting boson model (IBM-2). With this method, we calculate NME for all processes of interest in $0\\nu\\beta^-\\beta^-$, $2\\nu\\beta^-\\beta^-$, and in $0\\nu\\beta^+\\beta^+$, $0\\nu\\beta^+ EC^+$, $R0\\nu ECEC$, $2\\nu\\beta^+\\beta^+$, $2\\nu\\beta^+EC$, and $2\\nu ECEC$. With this method, the Fermi (F) matrix elements for $2\\nu\\beta\\beta$ vanish, and those for $0\\nu\\beta\\beta$ are considerably reduced.","authors_text":"F. Iachello, J. Barea, J. Kotila","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2015-06-29T07:52:06Z","title":"$0\\nu\\beta\\beta$ and $2\\nu\\beta\\beta$ nuclear matrix elements in the interacting boson model with isospin restoration"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.08530","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":"sha256:271bc7064205b95a1107522bf91a4cd28fe53b9bd1bd66267cf58ebf4540d222","target":"record","created_at":"2026-05-18T01:37:44Z","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":"e012262fc49bd4d5fc228ea0259688fd111649d66077b3199c59151c38b6ee5c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2015-06-29T07:52:06Z","title_canon_sha256":"6268bdde6297c92806c0922aac50208e0e36c679c47e11001db65b015bdbd540"},"schema_version":"1.0","source":{"id":"1506.08530","kind":"arxiv","version":1}},"canonical_sha256":"0f4d243d8b4bf98da92761dc027b8c7dec44a0109a0b1bf5a6971e4605b9addb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0f4d243d8b4bf98da92761dc027b8c7dec44a0109a0b1bf5a6971e4605b9addb","first_computed_at":"2026-05-18T01:37:44.014959Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:37:44.014959Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lUllE1ZVoqyy+uuC4pRvXhCNBlrl/zuJOoGBczEOgwMrYBkw0/newfxBZqg909aqMk+Uk6bTQBnUXGp3D3paAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:37:44.015753Z","signed_message":"canonical_sha256_bytes"},"source_id":"1506.08530","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:271bc7064205b95a1107522bf91a4cd28fe53b9bd1bd66267cf58ebf4540d222","sha256:20b6e9ff0f7d0481137cfad8cb76475feb553f362c25a379eb7ea52ea26e6925"],"state_sha256":"6231281550e68831d838281b1de6035fe30fafcedf38370b066049509de95e60"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JdkqywM5mbpHrN4DAJuVPDJEmMwPzuze0ZdnRnBLUAIwhxFYBWfLIP5uA+nCwYB7YJZd9q8EjPiw7SurXMK5Aw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T11:38:43.219104Z","bundle_sha256":"c72adeefdca83ddf52ad8d6cb17f7c2d8638bd464cfa7aa865bd3a6e4518a5b2"}}