Energy Correlators at Particle Colliders

  • Nuclear, Particle, Astroparticle and Cosmology (NUPAC) Seminars

September 30, 2025 2:00 PM
PAIS 3205

Host:
Huaiyu Duan
Presenter:
Bianka Mecaj (LANL)
A central goal in high-energy collider physics is to understand how energetic quarks and gluons fragment into collimated hadronic jets. Jet substructure encodes detailed information about QCD dynamics and provides a clean environment to test both perturbative and non-perturbative aspects of the theory. I will present a first-principles analysis of jet substructure using the energy-energy correlators (EEC), an infrared- and collinear-safe observable defined through energy flow correlations in quantum field theory. In the small-angle regime, we derive an all-orders factorization theorem within Soft-Collinear Effective Theory, enabling analytic control of the correlator’s angular scaling and resummation of logarithmic enhancements. These results incorporate finite quark mass effects, revealing the expected dead-cone suppression for heavy quarks, and provide theoretical benchmarks for LHC measurements as well as stringent tests of parton shower and hadronization models.

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