Hidden-Sector Dynamics and the Supersymmetric Seesaw
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.
Cite
@article{arxiv.0810.4881,
title = {Hidden-Sector Dynamics and the Supersymmetric Seesaw},
author = {Bruce. A. Campbell and John Ellis and David. W. Maybury},
journal= {arXiv preprint arXiv:0810.4881},
year = {2008}
}
Comments
26 pages, 9 figures, uses UApreprint.cls and subfigure.sty (included)