Recoil detection of the lightest neutralino in MSSM singlet extensions
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Issue Date
2007-06-01Author
Barger, Vernon
Langacker, Paul
Lewis, Ian M.
McCaskey, Mat
Shaughnessy, Gabe
Yencho, Brian
Publisher
American Physical Society
Type
Article
Article Version
Scholarly/refereed, publisher version
Rights
©2007 American Physical Society
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Show full item recordAbstract
We investigate the correlated predictions of singlet extended MSSM models for direct detection and the cosmological relic density of the lightest neutralino. To illustrate the general effects of the singlet, we take heavy sleptons and squarks. We apply CERN LEP, (g−2)μ, and perturbativity constraints. We find that the WMAP upper bound on the cold dark matter density limits much of the parameter space to regions where the lightest neutralino can be discovered in recoil experiments. The results for the next-to-minimal supersymmetric standard model and U(1)′-extended minimal supersymmetric standard model are typically similar to the MSSM since their light neutralinos have similar compositions and masses. In the nearly minimal supersymmetric standard model the neutralino is often very light and its recoil detection is within the reach of the CDMS II experiment. In general, most points in the parameter spaces of the singlet models we consider are accessible to the WARP experiment.
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Citation
Barger, V., Langacker, P., Lewis, I., McCaskey, M., Shaughnessy, G., & Yencho, B. (2007). Recoil detection of the lightest neutralino in MSSM singlet extensions. Physical Review D, 75(11), 115002.
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