TASI 2009 Lectures: Searching for Unexpected Physics at the LHC

Understand

These TASI lectures consider low mass hidden sectors from Hidden Valleys, Quirks and Unparticles.

• We show how each corresponds to a different limit of the same class of models: hidden sectors with non-abelian gauge groups with mass gaps well below a TeV that communicate to the Standard Model through weak scale suppressed higher dimension operators.
• We provide concrete examples of such models and discuss LHC signatures.
• Lastly we turn to discussing the application of Hidden Valleys to dark matter sectors.