{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:OSD5O5PWAXMAZ43WPVGPIKJMXD","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":"104e8265cae447bb8c2a06bf895f5d769ca41f12f826350d93acaa6fbe986601","cross_cats_sorted":["hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2014-07-10T18:35:45Z","title_canon_sha256":"be3bf54cd2c1deeac39e093d200bb29c73b1677ae495c903b1481e04b83af03e"},"schema_version":"1.0","source":{"id":"1407.2897","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.2897","created_at":"2026-05-18T01:42:38Z"},{"alias_kind":"arxiv_version","alias_value":"1407.2897v2","created_at":"2026-05-18T01:42:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.2897","created_at":"2026-05-18T01:42:38Z"},{"alias_kind":"pith_short_12","alias_value":"OSD5O5PWAXMA","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_16","alias_value":"OSD5O5PWAXMAZ43W","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_8","alias_value":"OSD5O5PW","created_at":"2026-05-18T12:28:43Z"}],"graph_snapshots":[{"event_id":"sha256:9305915012e86cab41b5288a3544f1cf6e162dbab88fb48cf03d5933a45fbe63","target":"graph","created_at":"2026-05-18T01:42:38Z","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 show how a Majorana mass for the Neutron could result from non-perturbative quantum gravity effects peculiar to string theory. In particular, \"exotic instantons\" in un-oriented string compactifications with D-branes extending the (supersymmetric) standard model could indirectly produce an effective operator delta{m} n^t n+h.c. In a specific model with an extra vector-like pair of `quarks', acquiring a large mass proportional to the string mass scale (exponentially suppressed by a function of the string moduli fields), delta{m} can turn out to be as low as 10^{-24}-10^{-25} eV. The induced n","authors_text":"Andrea Addazi, Massimo Bianchi","cross_cats":["hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2014-07-10T18:35:45Z","title":"Neutron Majorana mass from exotic instantons"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.2897","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":"sha256:65bf3d21c832be7fd7f011b33a67e151338294c25f377a1cdda1b5d3d2d19de3","target":"record","created_at":"2026-05-18T01:42:38Z","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":"104e8265cae447bb8c2a06bf895f5d769ca41f12f826350d93acaa6fbe986601","cross_cats_sorted":["hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2014-07-10T18:35:45Z","title_canon_sha256":"be3bf54cd2c1deeac39e093d200bb29c73b1677ae495c903b1481e04b83af03e"},"schema_version":"1.0","source":{"id":"1407.2897","kind":"arxiv","version":2}},"canonical_sha256":"7487d775f605d80cf3767d4cf4292cb8fc51a5ce51753eb98b383f1d84f68820","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7487d775f605d80cf3767d4cf4292cb8fc51a5ce51753eb98b383f1d84f68820","first_computed_at":"2026-05-18T01:42:38.026328Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:42:38.026328Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"zpH2ich4rVEYymlcQ2RgDl4KNqziB34w2V6f8dME/YJd3llacMB52/PrhIr0BMRMudZFH2WzWEB+d0iJrDD6Bg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:42:38.026849Z","signed_message":"canonical_sha256_bytes"},"source_id":"1407.2897","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:65bf3d21c832be7fd7f011b33a67e151338294c25f377a1cdda1b5d3d2d19de3","sha256:9305915012e86cab41b5288a3544f1cf6e162dbab88fb48cf03d5933a45fbe63"],"state_sha256":"c218d501385111fe65c827838e4f7e88fe15a33163658e752d10fd2977729cf4"}