{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:R7KI7WTRR2CEHM4FUKMPH6IYBM","short_pith_number":"pith:R7KI7WTR","canonical_record":{"source":{"id":"1509.08481","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-09-28T20:14:55Z","cross_cats_sorted":[],"title_canon_sha256":"b4dc394df0a9cf315b60b78eaaddd51259350a1e246782f7959fcbdc8b70f7cf","abstract_canon_sha256":"1a4e44ec1f71ffc925ea43e72ba99fefff465193263ecc450c83201e3528853a"},"schema_version":"1.0"},"canonical_sha256":"8fd48fda718e8443b385a298f3f9180b28692a1a3263113c71129ac1716a652d","source":{"kind":"arxiv","id":"1509.08481","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1509.08481","created_at":"2026-05-18T01:20:42Z"},{"alias_kind":"arxiv_version","alias_value":"1509.08481v3","created_at":"2026-05-18T01:20:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.08481","created_at":"2026-05-18T01:20:42Z"},{"alias_kind":"pith_short_12","alias_value":"R7KI7WTRR2CE","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_16","alias_value":"R7KI7WTRR2CEHM4F","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_8","alias_value":"R7KI7WTR","created_at":"2026-05-18T12:29:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:R7KI7WTRR2CEHM4FUKMPH6IYBM","target":"record","payload":{"canonical_record":{"source":{"id":"1509.08481","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-09-28T20:14:55Z","cross_cats_sorted":[],"title_canon_sha256":"b4dc394df0a9cf315b60b78eaaddd51259350a1e246782f7959fcbdc8b70f7cf","abstract_canon_sha256":"1a4e44ec1f71ffc925ea43e72ba99fefff465193263ecc450c83201e3528853a"},"schema_version":"1.0"},"canonical_sha256":"8fd48fda718e8443b385a298f3f9180b28692a1a3263113c71129ac1716a652d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:20:42.810675Z","signature_b64":"v7EJ3TslqFyJMMspwzH94sDxOWU5pPExBzhKLtjRhd0BIQXm6UFwEi7JCAOnXet2UCMIvgKugjkUuQwBQpwoDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8fd48fda718e8443b385a298f3f9180b28692a1a3263113c71129ac1716a652d","last_reissued_at":"2026-05-18T01:20:42.810214Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:20:42.810214Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1509.08481","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:20:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mPEt0vgx/dx98gK4buxv1kIzdyrGEUKnVHpYjDM8v3U2YypwGgGbED4ZcR6Qst5PcZKJ1OTzVIvbrd377skZAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T06:51:02.304960Z"},"content_sha256":"96ea79db3cc4f09bff44e90b5e32b05fff98c3eb6a12e261019d61a2d22b5044","schema_version":"1.0","event_id":"sha256:96ea79db3cc4f09bff44e90b5e32b05fff98c3eb6a12e261019d61a2d22b5044"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:R7KI7WTRR2CEHM4FUKMPH6IYBM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fermionic Semi-Annihilating Dark Matter","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Andrew Paul Spray, Yi Cai","submitted_at":"2015-09-28T20:14:55Z","abstract_excerpt":"Semi-annihilation is a generic feature of dark matter theories with symmetries larger than Z2. We investigate two examples with multi-component dark sectors comprised of an SU(2)L singlet or triplet fermion besides a scalar singlet. These are respectively the minimal fermionic semi-annihilating model, and the minimal case for a gauge-charged fermion. We study the relevant dark matter phenomenology, including the interplay of semi-annihilation and the Sommerfeld effect. We demonstrate that semi-annihilation in the singlet model can explain the gamma ray excess from the galactic center. For the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.08481","kind":"arxiv","version":3},"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":"2026-05-18T01:20:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Gu4/e2v4nhX/blSrzmnHC0MzoSNJKTCxDgEzZB4U9UeURmAWxvVXwmgissUdPPw0dsqECUjLaygXeyVr1G9KAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T06:51:02.305604Z"},"content_sha256":"25b8537dc646b61e8635a1bbec02143b65393bb1c4935b83507d95946abe0267","schema_version":"1.0","event_id":"sha256:25b8537dc646b61e8635a1bbec02143b65393bb1c4935b83507d95946abe0267"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/R7KI7WTRR2CEHM4FUKMPH6IYBM/bundle.json","state_url":"https://pith.science/pith/R7KI7WTRR2CEHM4FUKMPH6IYBM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/R7KI7WTRR2CEHM4FUKMPH6IYBM/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":"2026-05-26T06:51:02Z","links":{"resolver":"https://pith.science/pith/R7KI7WTRR2CEHM4FUKMPH6IYBM","bundle":"https://pith.science/pith/R7KI7WTRR2CEHM4FUKMPH6IYBM/bundle.json","state":"https://pith.science/pith/R7KI7WTRR2CEHM4FUKMPH6IYBM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/R7KI7WTRR2CEHM4FUKMPH6IYBM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:R7KI7WTRR2CEHM4FUKMPH6IYBM","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":"1a4e44ec1f71ffc925ea43e72ba99fefff465193263ecc450c83201e3528853a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-09-28T20:14:55Z","title_canon_sha256":"b4dc394df0a9cf315b60b78eaaddd51259350a1e246782f7959fcbdc8b70f7cf"},"schema_version":"1.0","source":{"id":"1509.08481","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1509.08481","created_at":"2026-05-18T01:20:42Z"},{"alias_kind":"arxiv_version","alias_value":"1509.08481v3","created_at":"2026-05-18T01:20:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.08481","created_at":"2026-05-18T01:20:42Z"},{"alias_kind":"pith_short_12","alias_value":"R7KI7WTRR2CE","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_16","alias_value":"R7KI7WTRR2CEHM4F","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_8","alias_value":"R7KI7WTR","created_at":"2026-05-18T12:29:39Z"}],"graph_snapshots":[{"event_id":"sha256:25b8537dc646b61e8635a1bbec02143b65393bb1c4935b83507d95946abe0267","target":"graph","created_at":"2026-05-18T01:20:42Z","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":"Semi-annihilation is a generic feature of dark matter theories with symmetries larger than Z2. We investigate two examples with multi-component dark sectors comprised of an SU(2)L singlet or triplet fermion besides a scalar singlet. These are respectively the minimal fermionic semi-annihilating model, and the minimal case for a gauge-charged fermion. We study the relevant dark matter phenomenology, including the interplay of semi-annihilation and the Sommerfeld effect. We demonstrate that semi-annihilation in the singlet model can explain the gamma ray excess from the galactic center. For the ","authors_text":"Andrew Paul Spray, Yi Cai","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-09-28T20:14:55Z","title":"Fermionic Semi-Annihilating Dark Matter"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.08481","kind":"arxiv","version":3},"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":"sha256:96ea79db3cc4f09bff44e90b5e32b05fff98c3eb6a12e261019d61a2d22b5044","target":"record","created_at":"2026-05-18T01:20:42Z","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":"1a4e44ec1f71ffc925ea43e72ba99fefff465193263ecc450c83201e3528853a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-09-28T20:14:55Z","title_canon_sha256":"b4dc394df0a9cf315b60b78eaaddd51259350a1e246782f7959fcbdc8b70f7cf"},"schema_version":"1.0","source":{"id":"1509.08481","kind":"arxiv","version":3}},"canonical_sha256":"8fd48fda718e8443b385a298f3f9180b28692a1a3263113c71129ac1716a652d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8fd48fda718e8443b385a298f3f9180b28692a1a3263113c71129ac1716a652d","first_computed_at":"2026-05-18T01:20:42.810214Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:20:42.810214Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"v7EJ3TslqFyJMMspwzH94sDxOWU5pPExBzhKLtjRhd0BIQXm6UFwEi7JCAOnXet2UCMIvgKugjkUuQwBQpwoDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:20:42.810675Z","signed_message":"canonical_sha256_bytes"},"source_id":"1509.08481","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:96ea79db3cc4f09bff44e90b5e32b05fff98c3eb6a12e261019d61a2d22b5044","sha256:25b8537dc646b61e8635a1bbec02143b65393bb1c4935b83507d95946abe0267"],"state_sha256":"d68fdd3eebab57a3aed2a407dee019d7855eec5b39c6dd1e8e2fe577004a84ab"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"s7qEGe6KhwVXd+0zGimmXPJ968YxGM+bnX62G+0mN/DXpS6NU3NbIBvAvzznsSUtOfDHE3Vmg8tGxEVUEcsBAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T06:51:02.309295Z","bundle_sha256":"a859f7d515d21085b93003df303808b63026fd05bd59f28761ac6e4ce6a1174e"}}