Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1993-12-09
Phys.Lett.B324:387-396,1994
Physics
High Energy Physics
High Energy Physics - Phenomenology
15 pages + 1 fig. in PS at the end of the paper. CERN TH.7089/93, IOA 297, NTUA 42/93
Scientific paper
10.1016/0370-2693(94)90211-9
We compute one loop radiative corrections to the physical neutralino masses in the MSSM considering the dominant top-stop contributions. We present a numerical renormalization group analysis of the feasibility of the radiative gauge symmetry breaking parametrized by the standard soft supersymmetry breaking terms. Although the above computed effects can be in principle large for extreme values of the Yukawa couplings, they do not in general exceed a few per cent for most of the parameter space. Therefore tree level constraints imposed on the gluino mass $m_{\tilde{g}}$ and on the superpotential parameter $\mu$ by LEP1 and CDF experiments, are not upset by the heavy top-stop sector.
Lahanas A. B.
Tamvakis Kyriakos
Tracas N. D.
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