Wednesday, November 16, 2011
Oskar Klein Conference Room (3481 Randall)
Speaker: Matt Reece (Harvard University, Physics)The first year of LHC data has dramatically reduced the allowed parameter space for low-energy supersymmetry, given certain assumptions. In this talk I will summarize the current state of these experimental limits, emphasizing which assumptions might be evaded to allow standard SUSY spectra to survive. I will then present an example of a class of models that are not yet constrained, called "Stealth Supersymmetry." These are models in which certain nearly-supersym?metric states present in decay chains lead to collider signatures without missing energy. I will discuss some specific examples of models in this class, and explain how the LHC might search for them.