Jesse Liu

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Jesse Liu

Grainger Fellow, University of Chicago

I am a Grainger Fellow at the University of Chicago, having recently finished my PhD on the ATLAS Experiment in the Oxford supersymmetry group. My research interests are in designing LHC discovery strategies for new dynamics, from Higgs bosons to supersymmetry and dark matter.

Phenomenology of supersymmetric dark matter
My theoretical analysis of early 13 TeV search techniques for new coloured particles identified the so-called 'Higgsino' as a promising candidate for dark matter in a 19-parameter 'pMSSM' supersymmetry framework.

Opening the soft lepton frontier for compressed electroweak SUSY
With international collaborators, I devised and led a new experimental search opening sensitivity to Higgsino dark matter and compressed sleptons beyond LEP for the first time in nearly two decades. This demanding analysis revealed striking blind spots where Higgsinos and sleptons can still be as light as 100 GeV.

Photon collider searches for new physics
When LHC beams cross, photons from the proton electromagnetic fields can collide to make new particles. The protons remain intact and are detected by forward detectors, allowing reconstruction of the full missing momentum 4-vector. My proposal shows this strategy can uncover the 100 GeV slepton blind spot.

Technical detector responsibilities
Essential to experimental results is my technical expertise in the operational performance of the ATLAS silicon tracker detector, trigger strategy design, simulation software for new physics signatures, and performance of ATLAS Forward Proton (AFP) detectors.

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