Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1997-01-15
Phys.Rev.D56:2820-2832,1997
Physics
High Energy Physics
High Energy Physics - Phenomenology
28 pages, latex, and 7 figs
Scientific paper
10.1103/PhysRevD.56.2820
An analysis is given of the effects of non-universal soft SUSY breaking masses in the Higgs sector and in the third generation squark sector, and it is shown that they are highly coupled. Analytic expressions are obtained for their effects on the parameters $\mu,m_A$ and on the third generation squark masses. Non-universality effects on dark matter event rates in neutralino-nucleus scattering are analysed. It is found that the effects are maximal in the range $m_{\tilde\chi_1}\leq 65$~GeV where the relic density is governed by the Z and Higgs poles. In this range the minimum event rates can be increased or decreased by factors of O(10) depending on the sign of non-universality. Above this range Landau pole effects arising from the heavy top mass tend to suppress the non-universality effects. The effect of more precise measurements of cosmological parameters on event rates, which is expected to occur in the next round of COBE like sattelite experiments, is also investigated. Implications for the analysis for dark matter searches are discussed.
Arnowitt Richard
Nath Pran
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