{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:Z62U34FDD7V6X65RBF3Y6A6MBU","short_pith_number":"pith:Z62U34FD","canonical_record":{"source":{"id":"2607.18857","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2026-07-21T08:46:01Z","cross_cats_sorted":[],"title_canon_sha256":"40a396c5cfe6dd5f1bcdfff4147bd4f14c4fc30c5e9cbb0fcfba4fbb810a9962","abstract_canon_sha256":"015a73028bd70d41ba32203e70f0d54e13e3a7284f99b25dc19584955de12770"},"schema_version":"1.0"},"canonical_sha256":"cfb54df0a31febebfbb109778f03cc0d185b6c7ec190c3e5bc5a65ed810f01a7","source":{"kind":"arxiv","id":"2607.18857","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.18857","created_at":"2026-07-22T01:23:16Z"},{"alias_kind":"arxiv_version","alias_value":"2607.18857v1","created_at":"2026-07-22T01:23:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.18857","created_at":"2026-07-22T01:23:16Z"},{"alias_kind":"pith_short_12","alias_value":"Z62U34FDD7V6","created_at":"2026-07-22T01:23:16Z"},{"alias_kind":"pith_short_16","alias_value":"Z62U34FDD7V6X65R","created_at":"2026-07-22T01:23:16Z"},{"alias_kind":"pith_short_8","alias_value":"Z62U34FD","created_at":"2026-07-22T01:23:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:Z62U34FDD7V6X65RBF3Y6A6MBU","target":"record","payload":{"canonical_record":{"source":{"id":"2607.18857","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2026-07-21T08:46:01Z","cross_cats_sorted":[],"title_canon_sha256":"40a396c5cfe6dd5f1bcdfff4147bd4f14c4fc30c5e9cbb0fcfba4fbb810a9962","abstract_canon_sha256":"015a73028bd70d41ba32203e70f0d54e13e3a7284f99b25dc19584955de12770"},"schema_version":"1.0"},"canonical_sha256":"cfb54df0a31febebfbb109778f03cc0d185b6c7ec190c3e5bc5a65ed810f01a7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-22T01:23:16.143590Z","signature_b64":"Gj+N1/diqVs4dP758ZmGAKpA0aGh0yBYJoaa/ABWhkcyrU3KcMmq21VIlRuC0pElt6WSG6XeSDvadhg0ISfcBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cfb54df0a31febebfbb109778f03cc0d185b6c7ec190c3e5bc5a65ed810f01a7","last_reissued_at":"2026-07-22T01:23:16.142734Z","signature_status":"signed_v1","first_computed_at":"2026-07-22T01:23:16.142734Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2607.18857","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-22T01:23:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WU7hSKznzR8UFyblDI163V9laRy3u5+pgmT5qmTG7ibSP1b6XVrYpnjYBSJmKnSakAqqqEgjCRZ2DEiTGPIfAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T04:53:16.366501Z"},"content_sha256":"8cc6fe2c887932e96320c844b184737528a5039381b53f03a77ff3b4e347cff3","schema_version":"1.0","event_id":"sha256:8cc6fe2c887932e96320c844b184737528a5039381b53f03a77ff3b4e347cff3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:Z62U34FDD7V6X65RBF3Y6A6MBU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Muon pair production in electron-positron collisions close to threshold in the presence of a strong laser field","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"C. M\\\"uller, N. Mahlin, S. Villalba-Ch\\'avez","submitted_at":"2026-07-21T08:46:01Z","abstract_excerpt":"Within the framework of strong-field quantum electrodynamics, we study the creation of muon-antimuon pairs in laser-assisted collisions of electrons with positrons, whose center-of-mass energy is close to the threshold of the process. Our focus lies on incident collision energies slightly below the threshold, where the associated energy gap has to be overcome by multiphoton absorption from the applied high-intensity laser field while the collision occurs. We calculate the cross section of the process and discuss its nonperturbative dependencies on the energy gap and the laser parameters. Three"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.18857","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2607.18857/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-22T01:23:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UfHKYY05/1LKiTpReHElzKsXblinQctjGRj35nogqnjQkaxmptB6x9y9YEygdj+KHlHzQUQywqDUxSuLB1SjCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T04:53:16.367001Z"},"content_sha256":"955a749f2fdd9d3df194525f566ef947717bf6b37ade670822790985b427d372","schema_version":"1.0","event_id":"sha256:955a749f2fdd9d3df194525f566ef947717bf6b37ade670822790985b427d372"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Z62U34FDD7V6X65RBF3Y6A6MBU/bundle.json","state_url":"https://pith.science/pith/Z62U34FDD7V6X65RBF3Y6A6MBU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Z62U34FDD7V6X65RBF3Y6A6MBU/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":"2026-08-04T04:53:16Z","links":{"resolver":"https://pith.science/pith/Z62U34FDD7V6X65RBF3Y6A6MBU","bundle":"https://pith.science/pith/Z62U34FDD7V6X65RBF3Y6A6MBU/bundle.json","state":"https://pith.science/pith/Z62U34FDD7V6X65RBF3Y6A6MBU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Z62U34FDD7V6X65RBF3Y6A6MBU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:Z62U34FDD7V6X65RBF3Y6A6MBU","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":"015a73028bd70d41ba32203e70f0d54e13e3a7284f99b25dc19584955de12770","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2026-07-21T08:46:01Z","title_canon_sha256":"40a396c5cfe6dd5f1bcdfff4147bd4f14c4fc30c5e9cbb0fcfba4fbb810a9962"},"schema_version":"1.0","source":{"id":"2607.18857","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.18857","created_at":"2026-07-22T01:23:16Z"},{"alias_kind":"arxiv_version","alias_value":"2607.18857v1","created_at":"2026-07-22T01:23:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.18857","created_at":"2026-07-22T01:23:16Z"},{"alias_kind":"pith_short_12","alias_value":"Z62U34FDD7V6","created_at":"2026-07-22T01:23:16Z"},{"alias_kind":"pith_short_16","alias_value":"Z62U34FDD7V6X65R","created_at":"2026-07-22T01:23:16Z"},{"alias_kind":"pith_short_8","alias_value":"Z62U34FD","created_at":"2026-07-22T01:23:16Z"}],"graph_snapshots":[{"event_id":"sha256:955a749f2fdd9d3df194525f566ef947717bf6b37ade670822790985b427d372","target":"graph","created_at":"2026-07-22T01:23:16Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2607.18857/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Within the framework of strong-field quantum electrodynamics, we study the creation of muon-antimuon pairs in laser-assisted collisions of electrons with positrons, whose center-of-mass energy is close to the threshold of the process. Our focus lies on incident collision energies slightly below the threshold, where the associated energy gap has to be overcome by multiphoton absorption from the applied high-intensity laser field while the collision occurs. We calculate the cross section of the process and discuss its nonperturbative dependencies on the energy gap and the laser parameters. Three","authors_text":"C. M\\\"uller, N. Mahlin, S. Villalba-Ch\\'avez","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2026-07-21T08:46:01Z","title":"Muon pair production in electron-positron collisions close to threshold in the presence of a strong laser field"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.18857","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":"sha256:8cc6fe2c887932e96320c844b184737528a5039381b53f03a77ff3b4e347cff3","target":"record","created_at":"2026-07-22T01:23:16Z","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":"015a73028bd70d41ba32203e70f0d54e13e3a7284f99b25dc19584955de12770","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2026-07-21T08:46:01Z","title_canon_sha256":"40a396c5cfe6dd5f1bcdfff4147bd4f14c4fc30c5e9cbb0fcfba4fbb810a9962"},"schema_version":"1.0","source":{"id":"2607.18857","kind":"arxiv","version":1}},"canonical_sha256":"cfb54df0a31febebfbb109778f03cc0d185b6c7ec190c3e5bc5a65ed810f01a7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cfb54df0a31febebfbb109778f03cc0d185b6c7ec190c3e5bc5a65ed810f01a7","first_computed_at":"2026-07-22T01:23:16.142734Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-22T01:23:16.142734Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Gj+N1/diqVs4dP758ZmGAKpA0aGh0yBYJoaa/ABWhkcyrU3KcMmq21VIlRuC0pElt6WSG6XeSDvadhg0ISfcBg==","signature_status":"signed_v1","signed_at":"2026-07-22T01:23:16.143590Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.18857","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8cc6fe2c887932e96320c844b184737528a5039381b53f03a77ff3b4e347cff3","sha256:955a749f2fdd9d3df194525f566ef947717bf6b37ade670822790985b427d372"],"state_sha256":"b9990af4ddac4e7c2a798954836c3d9f99a262c8aec0eee30ff88539217f4711"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MtR8bfOGvH34YAK4biIlqns/Yx768Vf8OfF+Sygb9GASrOLopanfmiXVPCe8hnKzQVX48r0Hbgo5IAmVJSp7AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T04:53:16.372100Z","bundle_sha256":"0c2b6a453a98532b0de31d5152b5fdc5a17605471b69d7634c578ce5740c4e05"}}