Why have supersymmetric particles not been observed?

Details Why have supersymmetric particles not been observed? Why have supersymmetric particles not been observed?

2011-01-05

arxiv.org/abs/1101.0867v2

Physics Letters B 698 (2011) 408-410

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages. v2: Note added to clarify how the lower bound on the SUSY mass scale is obtained

Scientific paper

10.1016/j.physletb.2011.03.032

If low-energy supersymmetry is the solution to the hierarchy problem, it is a puzzle why supersymmetric particles have not been observed experimentally to date. We show that supersymmetric particles in the TeV region can be explained if the fundamental cut-off scale of the theory is smaller than the 4-dimensional Planck scale and if thermal leptogenesis is the source of the observed baryon asymmetry. The supersymmetric particles such as sfermions and gauginos are predicted to be in the TeV region, while the gravitino is the LSP with mass of O(100)GeV and is a good candidate for dark matter. Interestingly, the cosmological moduli problem can be solved in the theory with the low cut-off scale.

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