Future satellite, balloon and ground based experiments will give precision determinations of the basic cosmological parameters and hence determine the amount of cold dark matter in the universe accurately. We consider here two cosmological models, the CDM model and the CDM model, and examine within the framework of supergravity grand unification the effect this will have for these models on supersymmetry searches at accelerators. In the former example the gluino (neutralino) mass has an upper bound of about 720(100) GeV and gaps (forbidden regions) may develop at lower energies. In the latter case the upper bound occurs at gluino (neutralino) mass of about 520(70) GeV with the squarks and selectron becoming light when gluino (neutralino) masses are greater than 420(55) GeV . Both models are sensitive to nonuniversal soft breaking masses, and show a correlation between large (small) dark matter detector event rates and low (high) b → s + branching ratio.


Originally posted at http://arxiv.org/abs/hep-ph/9801454v1.


cosmological parameters, high energy physics

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Dark matter (Astronomy), Particles (Nuclear physics)



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