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Simulation-based study of jet substructure of light- and heavy-flavor jets in p+p collisions at 200 GeV

Zhuoheng Yang1,2,*, Oleh Fedkevych3,4,5,6,7,†, and Roli Esha2,4,‡

  • *Contact author: zy224@duke.edu
  • †Contact author: oleh.o.fedkevych@jyu.fi
  • ‡Contact author: roli.esha@stonybrook.edu
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Phys. Rev. C 114, 024908 – Published 17 August, 2026

DOI: https://doi.org/10.1103/zh98-jf1w

Abstract

Jet substructure studies at the CERN Large Hadron Collider have been used to constrain parton distribution functions, test perturbative quantum chromodynamics, measure the strong-coupling constant, and probe the properties of the quark-gluon plasma. We extend these studies to lower collision energies at the BNL Relativistic Heavy Ion Collider (RHIC) and present a feasibility and strategy study for the sPHENIX experiment. In this work, we perform a PYTHIA8 based Monte Carlo study of jet substructure in p+p collisions at s=200 GeV with selection criteria adapted for a realistic measurement at sPHENIX. We consider jet substructure observables such as jet angularities and the primary Lund plane projection. In particular, we quantify the discriminating power of jet angularities for quark/gluon and light versus heavy flavor jets, and demonstrate how these observables can serve as experimentally accessible proxies for flavor separation at RHIC. We further show that the primary Lund plane exhibits a characteristic suppression pattern consistent with the dead cone effect for heavy quarks, and outline a concrete measurement strategy at sPHENIX based on a combination of heavy-flavor jet tagging and differential substructure observables.

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Phys. Rev. C 114, 024908– Published 17 August, 2026
  • Received 7 May 2025
  • Accepted 30 June 2026
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