Resurrecting the Dead-Cone: EEC Analysis of the Dead-Cone in Simulated p-p and e-p Collisions

The dead-cone effect is a fundamental feature of quantum chromodynamics dictating the angular suppression of gluon radiation for massive quarks. While the dead-cone has been studied at LHC energies (s=13 TeV), an analysis of low energy jets at RHIC energies and at the soon to be constructed EIC has yet to be conducted. This investigation visualizes the dead-cone through the Energy Energy Correlator (EEC), for RHIC (pp) and EIC (ep) collisions. Specifically, simulations were conducted using PYTHIA v8.315 for s=200 GeV pp, and s=140 GeV ep collisions. In pp collisions, the dead-cone's mass dependence was observed through the angular separation of particles in jets (∆R) of the transition region of the EEC, as the EEC peak for heavy flavor jets (charm and bottom) are at larger ∆R indicating higher gluon emission suppression at small angles. Additionally, as pTJet increases from 10-20 GeV to 40-60 GeV, the ∆R of the EEC transition region shifts to smaller for all jet flavors. This effect is observed to be enhanced for heavy flavor jets than light flavor jets corroborating with the dead-cone's angular relationship of m/E. In ep collisions, similar effects emerge, with a suppression of the EEC EEC at large ∆R than in pp collisions potentially arising from multi-parton interactions which will be discussed in this talk.