1996/05/31 by Manuel Drees, R. M. Godbole, Monoranjan Guchait +2 · 2 citations
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1103/physrevd.54.5598
published as Phys.Rev. D54 (1996) 5598-5605 · 16 pages, LaTeX, 4 figures enhanced postscript
arxiv created 1996/05/31 · openalex publication_date 1996/11/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Top squark contributions to the radiative correction to Rb and the top quark decay are analyzed over the relevant MSSM parameter space. One sees a 30% increase in the former along with a similar drop in the latter in going from the Higgsino-dominated to the mixed region. Consequently, one can get a viable SUSY contribution to Rb within the constraint of the top quark data only in the mixed region, corresponding to a photino-dominated LSP. We discuss the phenomenological implications of this model for top quark decay and direct top squark production, which can be tested with the Fermilab Tevatron data.