Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1998-01-30
Mod.Phys.Lett.A13:2239-2246,1998
Physics
High Energy Physics
High Energy Physics - Phenomenology
RevTeX 10 pages, 4 figures
Scientific paper
10.1142/S0217732398002394
Future sattelite, balloon and ground based experiments will give precision determinations of the basic cosmological parameters and hence determine the amount of cold dark matter accurately. We consider here two cosmological models, the nuCDM model and the LambdaCDM 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 deveop at lower energies. In the latter case the upper bound occurs at gluino (neutralino) mass of about 520(70) GeV with squarks and selectron becoming light when gluino (neutralino) masses are greater than 420(55) GeV. Both models are sensitive to non-universal soft breaking masses, and show a correlation between large (small) dark matter detector rates and low (high) b -> s+ gamma branching ratio.
Arnowitt Richard
Nath Pran
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