Unsupervised Hadronic SUEP at the LHC

Understand

Confining dark sectors with pseudo-conformal dynamics produce SUEP, or Soft Unclustered Energy Patterns, at colliders: isotropic dark hadrons with soft and democratic energies.

• We target the experimental nightmare scenario, SUEPs in exotic Higgs decays, where all dark hadrons decay promptly to SM hadrons.
• First, we identify three promising observables, the charged particle multiplicity, the event ring isotropy, and the matrix of geometric distances between charged tracks.
• Their patterns can be exploited through a cut-and-count search, supervised machine learning, or an unsupervised autoencoder.