Dark matter constraints in the minimal and nonminimal SUSY standard model

Details Dark matter constraints in the minimal and nonminimal SUSY standard model Dark matter constraints in the minimal and nonminimal SUSY standard model

1997-09-05

arxiv.org/abs/hep-ph/9709262v2

Phys.Rev. D58 (1998) 035011

Physics

High Energy Physics

High Energy Physics - Phenomenology

resubmitted to Phys. Rev. D, 54 pages, LaTeX, 9 figures, uses epsfig.sty and amssymb.sty

Scientific paper

10.1103/PhysRevD.58.035011

We determine the allowed parameter space and the particle spectra of the minimal SUSY standard model (MSSM) and nonminimal SUSY standard model (NMSSM) imposing correct electroweak gauge-symmetry breaking and recent experimental constraints. The parameters of the models are evolved with the SUSY RGEs assuming universality at the GUT scale. Applying the new unbounded from below (UFB) constraints we can exclude the LSP singlinos and light scalar and pseudoscalar Higgs singlets of the NMSSM. This exclusion removes the experimental possibility to distinguish between the MSSM and NMSSM via the recently proposed search for an additional cascade produced in the decay of the bino into the LSP singlino. Furthermore the effects of the dark matter condition for the MSSM and NMSSM are investigated and the differences concerning the parameter space, the SUSY particle and Higgs sector are discussed.

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