{"paper":{"title":"Top-Quark Decay at Next-to-Next-to-Next-to-Leading Order in QCD","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"Long Chen, Xiang Chen, Xin Guan, Yan-Qing Ma","submitted_at":"2023-09-05T03:59:53Z","abstract_excerpt":"We present the first complete high-precision QCD corrections to the inclusive decay width $\\mathrm{\\Gamma}_t$, the $W$-helicity fractions $f_{\\mathrm{L,R,0}}$ and semi-inclusive distributions for the top-quark decay process $t \\rightarrow b + W^+ + X_{\\mathrm{\\tiny QCD}}$ at NNNLO in the strong coupling constant $\\alpha_s$. In particular, the pure NNNLO QCD correction decreases the $\\mathrm{\\Gamma}_t$ by about $0.8\\%$ of the previous NNLO result at the top-quark pole mass scale, exceeding the error estimated by the usual scale-variation prescription. After taking into account all sources of er"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2309.01937","kind":"arxiv","version":2},"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/2309.01937/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"}