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arXiv · 0810.4881

Hidden-Sector Dynamics and the Supersymmetric Seesaw

Bruce. A. Campbell·John Ellis·David. W. Maybury
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Abstract

In light of recent analyses that have shown that nontrivial hidden-sector dynamics in models of supersymmetry breaking can lead to a significant impact on the predicted low-energy supersymmetric spectrum, we extend these studies to consider hidden-sector effects in extensions of the MSSM to include a seesaw model for neutrino masses. A dynamical hidden sector in an interval of mass scales below the seesaw scale would yield renormalization-group running involving both the anomalous dimension from the hidden sector and the seesaw-extended MSSM renormalization group equations (RGEs). These effects interfere in general, altering the generational mixing of the sleptons, and allowing for a substantial change to the expected level of charged-lepton flavour violation in seesaw-extended MSSM models. These results provide further support for recent theoretical observations that knowledge of the hidden sector is required in order to make concrete low-energy predictions, if the hidden sector is strongly coupled. In particular, hidden-sector dynamics may impact our ability to reconstruct the supersymmetric seesaw parameters from low-energy observations.

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Bruce. A. Campbell, John Ellis, David. W. Maybury. 2008-10-27. Hidden-Sector Dynamics and the Supersymmetric Seesaw. https://arxiv.org/abs/0810.4881

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