Physics Beyond the Standard Model: Supersymmetry and Extra Dimensions
Physics Beyond the Standard Model: Supersymmetry and Extra Dimensions
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Date
2007-04-23
Authors
Hsieh, Ken
Advisor
Luty, Markus A
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Abstract
After briefly describing the Standard Model and its hierarchy problem,
I focus on supersymmetry as an elegant
solution to the hierarchy problem and describe
the Minimal Supersymmetric Standard Model.
I then present two well-motivated models of supersymmetry-breaking
based on the ideas of gauge- and anomaly-mediated supersymmetry-breaking.
These two models are constructed to alleviate the little hierarchy problem of the Minimal Supersymmetric Standard Model,
and can naturally offer distinct collider signatures. I describe typical spectra of these two models and discuss their collider signatures at the Large Hadron Collider.
I also present a model based on universal extra
dimensions that solves both the problems of proton decay and neutrino masses in the minimal framework. The model offers an interesting
dark matter candidate as an admixture of Kaluza-Klein modes, and I analysis the range in parameter space that may give the observed relic density of dark matter and
the prospects of direct detection within the viable parameter space.