QCD corrections to the charged-Higgs-boson decay of a heavy top quark

1992/05/29 by Jiang Liu, York-Peng Yao, York‐Peng Yao · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1103/physrevd.46.5196

published as Phys.Rev. D46 (1992) 5196-5199 · 12 pages, UPR-0508T, UM-TH-92-13

arxiv created 1992/05/29 · openalex publication_date 1992/12/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

It is shown that up to an overall scale the lowest-order QCD corrections to t\ensuremath→H⁺b and to t\ensuremath→W⁺b are the same in the heavy-top-quark limit. Asymptotically, they are given by \ensuremath-(\frac4\ensuremathα_s3\ensuremathπ)[\frac\ensuremathπ²3\ensuremath-(5)/(4)], resulting in a reduction in the decay rate by about 9%, rather than 6% reported previously in the literature. This is verified explicitly by an analytic calculation. The application of the equivalence theorem to this process is also discussed.

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