Particle Correlations in Jets

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Abstract
We study particle correlations in high energy jets by comparing the measured energy-energy correlator with that constructed from two individual energy flows with respect to the jet axis. This comparison demonstrates that the genuine correlations are stronger at moderate or large angles across all jet energies, indicating that they are coming from correlated splitting. Meanwhile, at small angles, they increase with jet energy, exhibiting a peculiar pattern that can be used to explore jet energy loss in heavy-ion collisions. This method will provide a unique tool to disentangle different physics by comparing the genuine correlations in jet energy-energy correlators between heavy-ion collisions and proton-proton collisions.
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Funding Information
  • Office of Science
  • U.S. Department of Energy (DE-AC02-05CH11231)
  • National Science Foundation (ACI-2004571)
  • Nuclear Physics
  • Central China Normal University (XJ2026000302)

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