Constraining $α_s(M_Z)$ from the Hidden Sector

Details Constraining $α_s(M_Z)$ from the Hidden Sector Constraining $α_s(M_Z)$ from the Hidden Sector

1995-11-29

arxiv.org/abs/hep-ph/9511445v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages (23k), in ReVTeX plus 3 postscript figures (27k), Submitted to Physical Review Letters

Scientific paper

By including the effects of superstring thresholds, we reconsider minimal string unification together with the requirement of producing a supersymmetry-breaking gluino condensate in the hidden sector. This gives, for examples of phenomenologically-viable $Z_8'$ and other related orbifolds, the constraint that $0.1215 \leq \alpha_s(M_Z) \leq 0.1270$. In such models, a hidden photino can be a source of cosmological dark matter detectable by gravitational microlensing.

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