Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1994-05-19
Phys.Rev. D50 (1994) 6005-6008
Physics
High Energy Physics
High Energy Physics - Phenomenology
8 pages (LaTeX), 3 figures not included (available on request) ; ITP-SU-94/03, RUP-94-08
Scientific paper
10.1103/PhysRevD.50.6005
We propose a mechanism which could explain a slight excess of top signal rate recently reported by CDF in the framework of the supersymmetric standard model. If the scalar partner of the top (stop) is sufficiently light, the gluino with an appropriate mass could decay into the stop plus the top with almost 100\% branching ratio and experimental signatures of the gluino pair production could be indistinguishable from those of the top production in the present integrated luminosity Tevatron running. In this case the standard top signal, $W$ $+$ multi-jets events, would be effectively enhanced by the additional gluino contribution. It is shown, moreover, that such a mechanism can actually work in the radiative SU(2)$\times$U(1) breaking model without the GUT relations between the gaugino mass parameters.
Kon Tadashi
Nonaka Toshihiko
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