Soft-unclustered-energy patterns from quirks

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Abstract
We propose searching for physics beyond the Standard Model in the low-transverse-momentum tracks accompanying hard-scatter events at the LHC. TeV-scale resonances connected to a dark QCD sector could be enhanced by selecting events with anomalies in the track distributions. As a benchmark, a quirk model with microscopic string lengths is developed, including a setup for event simulation. For this model, strategies are presented to enhance the sensitivity compared to inclusive resonance searches: a simple cut-based selection, a supervised search, and a model-agnostic weakly supervised anomaly search with the CATHODE method. Expected discovery potentials and exclusion limits are shown for 140 fb − 1 of 13 TeV proton-proton collisions at the LHC.
Funding Information
  • Natural Sciences and Engineering Research Council of Canada
  • Canada Research Chairs
  • Alfred P. Sloan Foundation
  • University of Toronto
  • Deutsche Forschungsgemeinschaft
  • Bundesministerium für Forschung, Technologie und Raumfahrt (05H24GUA)
  • Helmholtz-Gemeinschaft
  • U.S. Department of Energy (DE-SC0010008)
  • Ontario Early Researcher Award
  • Germany’s Excellence Strategy (390833306)

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