{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:VAHVNS4ADPVWKANETHXELA3X5H","short_pith_number":"pith:VAHVNS4A","canonical_record":{"source":{"id":"1606.00248","kind":"arxiv","version":5},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2016-06-01T12:07:04Z","cross_cats_sorted":[],"title_canon_sha256":"01925dc585afb80c2c47e0c76745a5158f55b1387cbdf2d3e8941f24068ec566","abstract_canon_sha256":"c976663cac38b585729fc103d389ad1e2206f205f8be50b4f28d4ac2d5a83713"},"schema_version":"1.0"},"canonical_sha256":"a80f56cb801beb6501a499ee458377e9d3c1b1f0e35ce110c320e0b969c66034","source":{"kind":"arxiv","id":"1606.00248","version":5},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1606.00248","created_at":"2026-05-18T00:57:04Z"},{"alias_kind":"arxiv_version","alias_value":"1606.00248v5","created_at":"2026-05-18T00:57:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1606.00248","created_at":"2026-05-18T00:57:04Z"},{"alias_kind":"pith_short_12","alias_value":"VAHVNS4ADPVW","created_at":"2026-05-18T12:30:48Z"},{"alias_kind":"pith_short_16","alias_value":"VAHVNS4ADPVWKANE","created_at":"2026-05-18T12:30:48Z"},{"alias_kind":"pith_short_8","alias_value":"VAHVNS4A","created_at":"2026-05-18T12:30:48Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:VAHVNS4ADPVWKANETHXELA3X5H","target":"record","payload":{"canonical_record":{"source":{"id":"1606.00248","kind":"arxiv","version":5},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2016-06-01T12:07:04Z","cross_cats_sorted":[],"title_canon_sha256":"01925dc585afb80c2c47e0c76745a5158f55b1387cbdf2d3e8941f24068ec566","abstract_canon_sha256":"c976663cac38b585729fc103d389ad1e2206f205f8be50b4f28d4ac2d5a83713"},"schema_version":"1.0"},"canonical_sha256":"a80f56cb801beb6501a499ee458377e9d3c1b1f0e35ce110c320e0b969c66034","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:57:04.393031Z","signature_b64":"WoQ5fqn/DNLRb/jCmzEJbv4Scb6P1/T0FlFsLvaj0a/HhdGpidGTMw8CICb+99GS1I0QIuXzgi24B6SmHcVVDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a80f56cb801beb6501a499ee458377e9d3c1b1f0e35ce110c320e0b969c66034","last_reissued_at":"2026-05-18T00:57:04.392334Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:57:04.392334Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1606.00248","source_version":5,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:57:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"n+cEw2Xy8CfCM8XCkr8jyiGpd/gC2EPOn+pH7gD1PnLjd0/zb+XN5FQ+BnT9yWCErtqhWzyaZeRvXno8VfxuCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T21:57:10.946247Z"},"content_sha256":"6b5f6148a0fb352d30c9ea69ba959ae6367cde85b7c4d6c4eb3f69e0086c95eb","schema_version":"1.0","event_id":"sha256:6b5f6148a0fb352d30c9ea69ba959ae6367cde85b7c4d6c4eb3f69e0086c95eb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:VAHVNS4ADPVWKANETHXELA3X5H","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Study of BESIII electromagnetic calorimeter performance with radiative lepton pair events","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"Chunxiu Liu, Huaimin Liu, Vindhyawasini Prasad, Weidong Li, Xiaobin Ji, Xinchou Lou","submitted_at":"2016-06-01T12:07:04Z","abstract_excerpt":"We study the photon detection efficiency and position resolution of the electromagnetic calorimeter (EMC) of the BESIII detector. The control samples of the initial-state-radiation (ISR) process of $e^+e^-\\rightarrow \\gamma \\mu^+\\mu^-$ at $J/\\psi$ and $\\psi(3770)$ resonances are used for the calibration of the photon cluster shapes and photon detection efficiency study. The photon detection efficiency is defined as the fraction of predicted photon, determined by performing a kinematic fit with the four momenta of two charged tracks only, matched with the actual photons in the EMC. The spatial "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1606.00248","kind":"arxiv","version":5},"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":"2026-05-18T00:57:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pKqd2X8JKN/SH3+7qOd0WEzn5apNMrnxtqkzFsAg2k05wmOqdhXaucm0e2SAuzcXsVnztlJf47ZGkxUGLC6PBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T21:57:10.946943Z"},"content_sha256":"e439cf88da7ef1ffa568ab160e8b45218409e7bcb3ba90952f6c7221cfaa7da7","schema_version":"1.0","event_id":"sha256:e439cf88da7ef1ffa568ab160e8b45218409e7bcb3ba90952f6c7221cfaa7da7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VAHVNS4ADPVWKANETHXELA3X5H/bundle.json","state_url":"https://pith.science/pith/VAHVNS4ADPVWKANETHXELA3X5H/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VAHVNS4ADPVWKANETHXELA3X5H/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":"2026-05-31T21:57:10Z","links":{"resolver":"https://pith.science/pith/VAHVNS4ADPVWKANETHXELA3X5H","bundle":"https://pith.science/pith/VAHVNS4ADPVWKANETHXELA3X5H/bundle.json","state":"https://pith.science/pith/VAHVNS4ADPVWKANETHXELA3X5H/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VAHVNS4ADPVWKANETHXELA3X5H/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:VAHVNS4ADPVWKANETHXELA3X5H","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":"c976663cac38b585729fc103d389ad1e2206f205f8be50b4f28d4ac2d5a83713","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2016-06-01T12:07:04Z","title_canon_sha256":"01925dc585afb80c2c47e0c76745a5158f55b1387cbdf2d3e8941f24068ec566"},"schema_version":"1.0","source":{"id":"1606.00248","kind":"arxiv","version":5}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1606.00248","created_at":"2026-05-18T00:57:04Z"},{"alias_kind":"arxiv_version","alias_value":"1606.00248v5","created_at":"2026-05-18T00:57:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1606.00248","created_at":"2026-05-18T00:57:04Z"},{"alias_kind":"pith_short_12","alias_value":"VAHVNS4ADPVW","created_at":"2026-05-18T12:30:48Z"},{"alias_kind":"pith_short_16","alias_value":"VAHVNS4ADPVWKANE","created_at":"2026-05-18T12:30:48Z"},{"alias_kind":"pith_short_8","alias_value":"VAHVNS4A","created_at":"2026-05-18T12:30:48Z"}],"graph_snapshots":[{"event_id":"sha256:e439cf88da7ef1ffa568ab160e8b45218409e7bcb3ba90952f6c7221cfaa7da7","target":"graph","created_at":"2026-05-18T00:57:04Z","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 study the photon detection efficiency and position resolution of the electromagnetic calorimeter (EMC) of the BESIII detector. The control samples of the initial-state-radiation (ISR) process of $e^+e^-\\rightarrow \\gamma \\mu^+\\mu^-$ at $J/\\psi$ and $\\psi(3770)$ resonances are used for the calibration of the photon cluster shapes and photon detection efficiency study. The photon detection efficiency is defined as the fraction of predicted photon, determined by performing a kinematic fit with the four momenta of two charged tracks only, matched with the actual photons in the EMC. The spatial ","authors_text":"Chunxiu Liu, Huaimin Liu, Vindhyawasini Prasad, Weidong Li, Xiaobin Ji, Xinchou Lou","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2016-06-01T12:07:04Z","title":"Study of BESIII electromagnetic calorimeter performance with radiative lepton pair events"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1606.00248","kind":"arxiv","version":5},"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":"sha256:6b5f6148a0fb352d30c9ea69ba959ae6367cde85b7c4d6c4eb3f69e0086c95eb","target":"record","created_at":"2026-05-18T00:57:04Z","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":"c976663cac38b585729fc103d389ad1e2206f205f8be50b4f28d4ac2d5a83713","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2016-06-01T12:07:04Z","title_canon_sha256":"01925dc585afb80c2c47e0c76745a5158f55b1387cbdf2d3e8941f24068ec566"},"schema_version":"1.0","source":{"id":"1606.00248","kind":"arxiv","version":5}},"canonical_sha256":"a80f56cb801beb6501a499ee458377e9d3c1b1f0e35ce110c320e0b969c66034","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a80f56cb801beb6501a499ee458377e9d3c1b1f0e35ce110c320e0b969c66034","first_computed_at":"2026-05-18T00:57:04.392334Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:57:04.392334Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WoQ5fqn/DNLRb/jCmzEJbv4Scb6P1/T0FlFsLvaj0a/HhdGpidGTMw8CICb+99GS1I0QIuXzgi24B6SmHcVVDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:57:04.393031Z","signed_message":"canonical_sha256_bytes"},"source_id":"1606.00248","source_kind":"arxiv","source_version":5}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6b5f6148a0fb352d30c9ea69ba959ae6367cde85b7c4d6c4eb3f69e0086c95eb","sha256:e439cf88da7ef1ffa568ab160e8b45218409e7bcb3ba90952f6c7221cfaa7da7"],"state_sha256":"cc47d0dc4a33f1650cc0ffd47166be51266fd5b0baaa4ca43cf5ff24dd48813e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"j+zGbodKcfq1/rx8nXNM5j7+R213zbTT7n9ntItr8Hvfx6GxDI2lWZWaFuXAyczIaGc4rU78s7dXsEJ++lBrAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T21:57:10.950834Z","bundle_sha256":"98597d146e231f2ce42d1051ef1352b41570e3f83afec2a08c19b2072fa18131"}}