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Carey, R. Prieels, S. J. Freedman, S. Knaack, S. M. Clayton, T. A. Case, T. Gorringe, T. I. Banks, V. A. Ganzha, V. Tishchenko","submitted_at":"2015-02-03T16:30:13Z","abstract_excerpt":"Background: The rate \\lambda_pp\\mu\\ characterizes the formation of pp\\mu\\ molecules in collisions of muonic p\\mu\\ atoms with hydrogen. In measurements of the basic weak muon capture reaction on the proton to determine the pseudoscalar coupling g_P, capture occurs from both atomic and molecular states. Thus knowledge of \\lambda_pp\\mu\\ is required for a correct interpretation of these experiments.\n  Purpose: Recently the MuCap experiment has measured the capture rate \\Lambda_S from the singlet p\\mu\\ atom, employing a low density active target to suppress pp\\mu\\ formation (PRL 110, 12504 (2013))."},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1502.00913","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2015-02-03T16:30:13Z","cross_cats_sorted":["hep-ex","physics.ins-det"],"title_canon_sha256":"38efb7f0f4772ffb473f54577bde6dec9eccc93431d5d9bfc30d9446f31b48c1","abstract_canon_sha256":"9f9089de0d3f442ca90ff8b772f56d00f5b23e9b71e3099cb67bb93cb9368c2e"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:04:06.866982Z","signature_b64":"AOHuPBj03ku+Oh8Jp8Y78eZez8o7xMLUmYXpdZBZwI9FRx5iKRAGsc9TtHihLQHGJ77NgWbueiyt832x3z50BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"03f82a9ef9a03a084491d7927b29f466d0ed0e29b112d38b3ea4f072c48753f9","last_reissued_at":"2026-05-18T02:04:06.866231Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:04:06.866231Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Measurement of the Formation Rate of Muonic Hydrogen Molecules","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex","physics.ins-det"],"primary_cat":"nucl-ex","authors_text":"A. 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