{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:YIM7COBFVP7L7T7K7PUFRGXDBY","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":"997e0e5c0c1a6e06551062a310ed1a5e85b570e65902ba4115d8ce852211209f","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2018-08-22T08:53:57Z","title_canon_sha256":"ac2a287c83114ecf9b9f54efa1f58e22b55f69ca7fb7131247a02b0be2404f70"},"schema_version":"1.0","source":{"id":"1808.07279","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.07279","created_at":"2026-05-18T00:07:27Z"},{"alias_kind":"arxiv_version","alias_value":"1808.07279v1","created_at":"2026-05-18T00:07:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.07279","created_at":"2026-05-18T00:07:27Z"},{"alias_kind":"pith_short_12","alias_value":"YIM7COBFVP7L","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_16","alias_value":"YIM7COBFVP7L7T7K","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_8","alias_value":"YIM7COBF","created_at":"2026-05-18T12:33:04Z"}],"graph_snapshots":[{"event_id":"sha256:2607ff93b351d0014530e96a5430c1fbb33040534fc579062425fe620d0a9c12","target":"graph","created_at":"2026-05-18T00:07:27Z","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":"The MEG II experiment at Paul Scherrer Institut in Switzerland will search for the lepton flavour violating muon decay, $\\mu^+\\to e^+\\gamma$, with a sensitivity of $4\\times10^{-14}$ improving the existing limit of an order of magnitude. In 2016, we finished the construction of the MEG II Timing Counter, the subdetector dedicated to the measurement of the positron emission time. The first one-fourth of it was installed in the experimental area and we performed a pilot run with the MEG~II beam of $7\\times10^{7}\\mu^+/$s. The timing resolution reached the design value improving by a factor of two ","authors_text":"A. De Bari, A. Mtchedilishvili, D. Nicol, F. Gatti, G. Boca, L. Galli, M. Biasotti, M. De Gerone, M. Francesconi, M. Nakao, M. Nishimura, M. Rossella, M. Simonetta, M. Usami, P. W. Cattaneo, S. Ritt, W. Ootani, Y. Uchiyama","cross_cats":["hep-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2018-08-22T08:53:57Z","title":"Results from Pilot Run for MEG II Positron Timing Counter"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.07279","kind":"arxiv","version":1},"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":"sha256:1ee0ae5b17dbaf0c2afd5cb33cd83de6a3dda6db1e8ad68fdc6a03470bcc5375","target":"record","created_at":"2026-05-18T00:07:27Z","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":"997e0e5c0c1a6e06551062a310ed1a5e85b570e65902ba4115d8ce852211209f","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2018-08-22T08:53:57Z","title_canon_sha256":"ac2a287c83114ecf9b9f54efa1f58e22b55f69ca7fb7131247a02b0be2404f70"},"schema_version":"1.0","source":{"id":"1808.07279","kind":"arxiv","version":1}},"canonical_sha256":"c219f13825abfebfcfeafbe8589ae30e2a4af139e19251d8269757505f689c48","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c219f13825abfebfcfeafbe8589ae30e2a4af139e19251d8269757505f689c48","first_computed_at":"2026-05-18T00:07:27.217357Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:07:27.217357Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"f769VUxPeQUg8FmP5+WshD+wnk0ERPoalkvhIZcOVB5SAKpJ+eQa1vvL6aFvI8jANUee9RfSPSiVrltt6vNzDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:07:27.218022Z","signed_message":"canonical_sha256_bytes"},"source_id":"1808.07279","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1ee0ae5b17dbaf0c2afd5cb33cd83de6a3dda6db1e8ad68fdc6a03470bcc5375","sha256:2607ff93b351d0014530e96a5430c1fbb33040534fc579062425fe620d0a9c12"],"state_sha256":"8a84f6871c5dd0422a37e4b290c4eed67e0156de1abd850ec371417047becc6c"}