Colloquium

Flashes of Hidden Worlds at Colliders

Fri, 29 Sep 2017 2:30 PM
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Colloquium
Flashes of Hidden Worlds at Colliders

David Curtin
University of Toronto

Sept 29, 2017 at 2:30pm in AQ3159

Synopsis

After briefly reviewing the Standard Model of particle physics, I explain why the fundamental reasons to expect New Physics are more urgent than ever. Null results of searches at the Large Hadron Collider (LHC) and other experiments are therefore especially puzzling. I argue that this points us towards new theories for addressing these fundamental mysteries, and new experimental approaches for discovering them. I will discuss how theories of Hidden Sectors can address the Hierarchy Problem, the universe's matter-antimatter asymmetry, and Dark Matter. I outline why these scenarios could have gone undiscovered so far, but also why their hidden nature is also the key to their discovery, since they give rise to the production of exotic Long-Lived Particles (LLPs) at the LHC. Exploring this Lifetime Frontier requires a new systematic search program, as well as new detectors. Our proposed MATHUSLA experiment will boost the sensitivity of the HL-LHC by orders of magnitude.