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The low mass difference value matches the theory expectations for the lowest vector state of the b-bar c quarkonium system, the B_c^{*+} meson.","weakest_assumption":"The photons reconstructed via conversions to electron-positron pairs in the detector material, together with the three-muon final state, correctly isolate the signal without significant contamination from misidentified backgrounds or other processes that could produce a fake peak at the reported mass difference."}},"verdict_id":"157e78da-9298-4271-85e1-58f0b61ce02e"}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:89f48f89525826cf418313bbed0d8cc1d49727d72e3f16ada608967c656ad7bb","target":"record","created_at":"2026-05-20T00:01:59Z","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":"aec1d771332f1fb40539c20286f261d0bde1713347a33dc1f989cf58998572e5","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ex","submitted_at":"2026-05-15T17:39:38Z","title_canon_sha256":"bc768d2b011b51c186add4b42fc71c51085d34ed1f51db20b06878896feb3202"},"schema_version":"1.0","source":{"id":"2605.16228","kind":"arxiv","version":1}},"canonical_sha256":"308f2eab43cb3c860d6699b167eec7d03e1cd16fc81a3b8fd8d72b3557f9d49d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"308f2eab43cb3c860d6699b167eec7d03e1cd16fc81a3b8fd8d72b3557f9d49d","first_computed_at":"2026-05-20T00:01:59.038096Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-20T00:01:59.038096Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PdPcsXJ9VvncjkegC0TzOIs4vEHaeUSiYL4pfOMGQtTYYYdaQuhjSxOxm/7hlffOAXQtpCjL5LezErhRQzssDg==","signature_status":"signed_v1","signed_at":"2026-05-20T00:01:59.038842Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.16228","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:89f48f89525826cf418313bbed0d8cc1d49727d72e3f16ada608967c656ad7bb","sha256:6603a91a12123779adce3cb4aaa31b5420036ba344383182b634de3454f339bc"],"state_sha256":"c15f7ae323381d9dabb3c25be94970810b70936dc863b866d657a1aeeec43144"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bWu9IvdJlrOQlrtGDD+W9dEd7zJlBUlMiTovUscehBBUUZ6GRUff+qtP9vJ5kANUUI0F04OcdJ4OtElOczn2DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-22T00:58:37.321424Z","bundle_sha256":"058a6a0f3552da8775e9154ac3c6f32d2a64450c619e1667fbe422b571ac4d5a"}}