{"paper":{"title":"NNLO Unquenched Calculation of the b Quark Mass","license":"","headline":"","cross_cats":["hep-ex","hep-ph"],"primary_cat":"hep-lat","authors_text":"F. Rapuano, G. Martinelli, L. Giusti, V. Gimenez","submitted_at":"2000-02-07T16:38:14Z","abstract_excerpt":"By combining the first unquenched lattice computation of the B-meson binding energy and the two-loop contribution to the lattice HQET residual mass, we determine the (\\bar{{MS}}) (b)-quark mass, (\\bar{m}_{b}(\\bar{m}_{b})). The inclusion of the two-loop corrections is essential to extract (\\bar{m}_{b}(\\bar{m}_{b})) with a precision of ({\\cal O}(\\Lambda^{2}_{QCD}/m_{b})), which is the uncertainty due to the renormalon singularities in the perturbative series of the residual mass. Our best estimate is (\\bar{m}_{b}(\\bar{m}_{b}) = (4.26 \\pm 0.09) {\\rm GeV}), where we have combined the different err"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-lat/0002007","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":""},"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"}