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We combine Monte Carlo data for the meson mass spectrum with perturbative calculations of the short-distance behavior, to extract $\\bar{\\Lambda}$ and $\\lambda_1$ from a formula from HQET. Taking into account uncertainties from fitting the mass dependence and from taking the continuum limit, we find $\\bar{\\Lambda} = 0.68{+0.02}_{-0.12} \\text{GeV}$ and $\\lambda_1 = -(0.45 \\pm 0.12) \\text{GeV}^2$ in the quenched approximation."},"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":"hep-ph/0006345","kind":"arxiv","version":3},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"2000-06-29T22:18:27Z","cross_cats_sorted":["hep-lat"],"title_canon_sha256":"11defc0c52680a8e4599211d3cfb619c8639df0394a7167620bf37710409a9dd","abstract_canon_sha256":"231076fb7d601e9596040bd72628a58a75fb8fbcad4c92eaf8ed20969ccf7b0f"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:20:13.234963Z","signature_b64":"2HhY6+e5rz7CR/LLL860kUDopBMX/Vbj4+lBX1otiSWbkDelpxU+U5xD9Y/mEQn9aDbqbey6/YkmKKzcH9iQAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a3523f892e9e1cc3c4fcfc76589221178248c878fedeabcc577a8c9d48d9fb19","last_reissued_at":"2026-07-04T16:20:13.234555Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:20:13.234555Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Computation of $\\bar{\\Lambda}$ and $\\lambda_1$ with Lattice QCD","license":"","headline":"","cross_cats":["hep-lat"],"primary_cat":"hep-ph","authors_text":"Andreas S. 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