$μ$ Problem, SO(10) SUSY GUT and Heavy Gluino LSP

Details $μ$ Problem, SO(10) SUSY GUT and Heavy Gluino LSP $μ$ Problem, SO(10) SUSY GUT and Heavy Gluino LSP

2000-10-31

arxiv.org/abs/hep-ph/0010351v1

Int.J.Mod.Phys. A16S1B (2001) 849-851

Physics

High Energy Physics

High Energy Physics - Phenomenology

Talk given at The Meeting of The Division of Particles and Fields of The American Physical Society (DPF 2000), Columbus, Ohio,

Scientific paper

10.1142/S0217751X0100828X

We present a solution to the $\mu$ problem in an SO(10) supersymmetric grand unified (SUSY GUT) model with gauge mediated (GMSB) and D-term supersymmetry breaking. A Peccei-Quinn ({\bf PQ}) symmetry is broken at the messenger scale and enables the generation of the $\mu$ term. The invisible axion (Goldstone boson of {\bf PQ} symmetry breaking) is a cold dark matter candidate. At low energy, our model leads to a phenomenologically acceptable version of the minimal supersymmetric standard model (MSSM) with novel particle phenomenology. Either the gluino or the gravitino is the lightest supersymmetric particle (LSP). The phenomenological constraints on the model result in a Higgs with mass $\sim 86 - 91$ GeV and $\tan\beta \sim 9 - 14$.

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