{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:JMWAGCAINACLHBU4SEIWS6W3OP","short_pith_number":"pith:JMWAGCAI","canonical_record":{"source":{"id":"1901.08368","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-01-24T11:55:23Z","cross_cats_sorted":[],"title_canon_sha256":"a5dafc451f09e120c2a8fca6b43c7f2010dcd19a42900cac413ca94ae324ef5b","abstract_canon_sha256":"219ba9bb558fddd6fd1b0458574ec97eced78d38dece059bd38832c3d4b445af"},"schema_version":"1.0"},"canonical_sha256":"4b2c0308086804b3869c9111697adb73c3ec76f5326f0962391f58675172f29e","source":{"kind":"arxiv","id":"1901.08368","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.08368","created_at":"2026-05-17T23:42:24Z"},{"alias_kind":"arxiv_version","alias_value":"1901.08368v2","created_at":"2026-05-17T23:42:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.08368","created_at":"2026-05-17T23:42:24Z"},{"alias_kind":"pith_short_12","alias_value":"JMWAGCAINACL","created_at":"2026-05-18T12:33:21Z"},{"alias_kind":"pith_short_16","alias_value":"JMWAGCAINACLHBU4","created_at":"2026-05-18T12:33:21Z"},{"alias_kind":"pith_short_8","alias_value":"JMWAGCAI","created_at":"2026-05-18T12:33:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:JMWAGCAINACLHBU4SEIWS6W3OP","target":"record","payload":{"canonical_record":{"source":{"id":"1901.08368","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-01-24T11:55:23Z","cross_cats_sorted":[],"title_canon_sha256":"a5dafc451f09e120c2a8fca6b43c7f2010dcd19a42900cac413ca94ae324ef5b","abstract_canon_sha256":"219ba9bb558fddd6fd1b0458574ec97eced78d38dece059bd38832c3d4b445af"},"schema_version":"1.0"},"canonical_sha256":"4b2c0308086804b3869c9111697adb73c3ec76f5326f0962391f58675172f29e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:42:24.461854Z","signature_b64":"IVPz9ipyznw+5DewZrmZn3mxuhuUSHum+rb7PWnXxqocboNzIu5CYloJgl614gW2VJcckgij/gHrefkjW3mkAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4b2c0308086804b3869c9111697adb73c3ec76f5326f0962391f58675172f29e","last_reissued_at":"2026-05-17T23:42:24.461226Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:42:24.461226Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1901.08368","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":"2026-05-17T23:42:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2KmgnafMLlYOJUyZZYLd1nvyiRw5+cKk8NT1V8gm+9ahtr4BkRQ5W20daaE0fc5nLSc/p4HnGYhxOds9qF2vBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T15:53:47.389732Z"},"content_sha256":"f22faeb816576f77bcfe94e5f4a8007aa3df4a72ad09a321e8897ed237c473a6","schema_version":"1.0","event_id":"sha256:f22faeb816576f77bcfe94e5f4a8007aa3df4a72ad09a321e8897ed237c473a6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:JMWAGCAINACLHBU4SEIWS6W3OP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On lepton flavour universality in semileptonic $B_c \\to \\eta_c, J/\\psi$ decays","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Blazenka Melic, Domagoj Leljak, Monalisa Patra","submitted_at":"2019-01-24T11:55:23Z","abstract_excerpt":"We discuss $B_c \\to \\eta_c$ and $B_c \\to J/\\psi$ semileptonic decays within the Standard Model (SM) and beyond. The relevant transition form factors, being the main source of theoretical uncertainties, are calculated in the sum rule approach and are provided in a full $q^2$ range. We calculate the semileptonic branching fractions and find for the ratios, $R_{\\eta_c}|_{\\rm SM}= 0.32 \\pm 0.02$, $R_{J/\\psi}|_{\\rm SM} = 0.23 \\pm 0.01$. Both predictions are in agreement with other existing calculations and support the current tension in $R_{J/\\psi}$ at 2$\\sigma$ level with the experiment. To extend"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.08368","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":"2026-05-17T23:42:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/cCWntNrjSWWSM5SVImkjJ9cH7mr8aBSxElQXW4gBRekKC7KSuAdltfanSi4G/02hqiFU7VqhLrYsRDXkQgXCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T15:53:47.390076Z"},"content_sha256":"467e9b209ec71f62daa648ecd3b5e6e8662693b777b7e5e1790d0854074dc54a","schema_version":"1.0","event_id":"sha256:467e9b209ec71f62daa648ecd3b5e6e8662693b777b7e5e1790d0854074dc54a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JMWAGCAINACLHBU4SEIWS6W3OP/bundle.json","state_url":"https://pith.science/pith/JMWAGCAINACLHBU4SEIWS6W3OP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JMWAGCAINACLHBU4SEIWS6W3OP/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":"2026-06-02T15:53:47Z","links":{"resolver":"https://pith.science/pith/JMWAGCAINACLHBU4SEIWS6W3OP","bundle":"https://pith.science/pith/JMWAGCAINACLHBU4SEIWS6W3OP/bundle.json","state":"https://pith.science/pith/JMWAGCAINACLHBU4SEIWS6W3OP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JMWAGCAINACLHBU4SEIWS6W3OP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:JMWAGCAINACLHBU4SEIWS6W3OP","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":"219ba9bb558fddd6fd1b0458574ec97eced78d38dece059bd38832c3d4b445af","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-01-24T11:55:23Z","title_canon_sha256":"a5dafc451f09e120c2a8fca6b43c7f2010dcd19a42900cac413ca94ae324ef5b"},"schema_version":"1.0","source":{"id":"1901.08368","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.08368","created_at":"2026-05-17T23:42:24Z"},{"alias_kind":"arxiv_version","alias_value":"1901.08368v2","created_at":"2026-05-17T23:42:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.08368","created_at":"2026-05-17T23:42:24Z"},{"alias_kind":"pith_short_12","alias_value":"JMWAGCAINACL","created_at":"2026-05-18T12:33:21Z"},{"alias_kind":"pith_short_16","alias_value":"JMWAGCAINACLHBU4","created_at":"2026-05-18T12:33:21Z"},{"alias_kind":"pith_short_8","alias_value":"JMWAGCAI","created_at":"2026-05-18T12:33:21Z"}],"graph_snapshots":[{"event_id":"sha256:467e9b209ec71f62daa648ecd3b5e6e8662693b777b7e5e1790d0854074dc54a","target":"graph","created_at":"2026-05-17T23:42:24Z","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 discuss $B_c \\to \\eta_c$ and $B_c \\to J/\\psi$ semileptonic decays within the Standard Model (SM) and beyond. The relevant transition form factors, being the main source of theoretical uncertainties, are calculated in the sum rule approach and are provided in a full $q^2$ range. We calculate the semileptonic branching fractions and find for the ratios, $R_{\\eta_c}|_{\\rm SM}= 0.32 \\pm 0.02$, $R_{J/\\psi}|_{\\rm SM} = 0.23 \\pm 0.01$. Both predictions are in agreement with other existing calculations and support the current tension in $R_{J/\\psi}$ at 2$\\sigma$ level with the experiment. To extend","authors_text":"Blazenka Melic, Domagoj Leljak, Monalisa Patra","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-01-24T11:55:23Z","title":"On lepton flavour universality in semileptonic $B_c \\to \\eta_c, J/\\psi$ decays"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.08368","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:f22faeb816576f77bcfe94e5f4a8007aa3df4a72ad09a321e8897ed237c473a6","target":"record","created_at":"2026-05-17T23:42:24Z","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":"219ba9bb558fddd6fd1b0458574ec97eced78d38dece059bd38832c3d4b445af","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-01-24T11:55:23Z","title_canon_sha256":"a5dafc451f09e120c2a8fca6b43c7f2010dcd19a42900cac413ca94ae324ef5b"},"schema_version":"1.0","source":{"id":"1901.08368","kind":"arxiv","version":2}},"canonical_sha256":"4b2c0308086804b3869c9111697adb73c3ec76f5326f0962391f58675172f29e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4b2c0308086804b3869c9111697adb73c3ec76f5326f0962391f58675172f29e","first_computed_at":"2026-05-17T23:42:24.461226Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:42:24.461226Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"IVPz9ipyznw+5DewZrmZn3mxuhuUSHum+rb7PWnXxqocboNzIu5CYloJgl614gW2VJcckgij/gHrefkjW3mkAg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:42:24.461854Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.08368","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f22faeb816576f77bcfe94e5f4a8007aa3df4a72ad09a321e8897ed237c473a6","sha256:467e9b209ec71f62daa648ecd3b5e6e8662693b777b7e5e1790d0854074dc54a"],"state_sha256":"e6f417c3290cd4fb521ad6da035587f696d479a41fbaa61dbaeba6f509cf743d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"O196Oix7fPn7X/u4dhcuTBm6hEOUWs8I79/FYQge3CW2bbw6OekHCUj42pC8F4vpABE3D+DXpnaudHmuY2BZAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T15:53:47.392002Z","bundle_sha256":"6222fddd603ccb91d0f432cb020a7041f229c9a34e89a82501f684a076e08c56"}}