Electroweak supersymmetric quantum corrections to the top quark width

David Garcia, Ricardo A. Jiménez, Joan Solà, Wolfgang Hollik

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39 Citations (Scopus)

Abstract

Within the framework of the MSSM, we compute the electroweak one-loop supersymmetric quantum corrections to the width Γ(t → W+b) of the canonical main decay of the top quark. The results are presented in two on-shell renormalization schemes parametrized either by α or GF. While in the Standard Model, and in the Higgs sector of the MSSM, the electroweak radiative corrections in the GF-scheme are rather insensitive to the top quark mass and are of order of 1% at most, the rest ("genuine" part) of the supersymmetric quantum effects in the MSSM amount to a non-negligible correction that could be about one order of magnitude larger, depending on the top quark mass and of the region of the supersymmetric parameter space. These new electroweak effects, therefore, could be of the same order (and go in the same direction) as the conventional leading QCD corrections. © 1994.
Original languageEnglish
Pages (from-to)53-80
JournalNuclear Physics, Section B
Volume427
Issue number1-2
DOIs
Publication statusPublished - 26 Sep 1994

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