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arXiv · hep-ph/0006047

The GUT Scale and Superpartner Masses from Anomaly Mediated Supersymmetry Breaking

Z. Chacko·M. Luty·E. Ponton·Y. Shadmi·Y. Shirman
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Abstract

We consider models of anomaly-mediated supersymmetry breaking (AMSB) in which the grand unification (GUT) scale is determined by the vacuum expectation value of a chiral superfield. If the anomaly-mediated contributions to the potential are balanced by gravitational-strength interactions, we find a model-independent prediction for the GUT scale of order $M_{\rm Planck} / (16π^2)$. The GUT threshold also affects superpartner masses, and can easily give rise to realistic predictions if the GUT gauge group is asymptotically free. We give an explicit example of a model with these features, in which the doublet-triplet splitting problem is solved. The resulting superpartner spectrum is very different from that of previously considered AMSB models, with gaugino masses typically unifying at the GUT scale.

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Z. Chacko, M. Luty, E. Ponton, Y. Shadmi, Y. Shirman. 2000-06-05. The GUT Scale and Superpartner Masses from Anomaly Mediated Supersymmetry Breaking. https://doi.org/10.1103/physrevd.64.055009

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