Constraining $\alpha_s(M_Z)$ from the Hidden Sector

(2) Department of Physics; Astronomy; Bettina Keszthelyi (1); Brian D. Wright (1); Chapel Hill; Paul H. Frampton (1); Thomas W. Kephart (2) ((1) Institute of Field Physics; University of North Carolina; Vanderbilt University )

arxiv: hep-ph/9511445 · v2 · submitted 1995-11-29 · ✦ hep-ph

Constraining α_s(M_Z) from the Hidden Sector

Paul H. Frampton (1) , Bettina Keszthelyi (1) , Brian D. Wright (1) , Thomas W. Kephart (2) ((1) Institute of Field Physics , University of North Carolina , Chapel Hill , (2) Department of Physics , Astronomy

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Vanderbilt University )

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classification ✦ hep-ph

keywords hiddenalphasectorcondensateconstrainingconstraintcosmologicaldark

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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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Constraining α_s(M_Z) from the Hidden Sector

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