The study of jets and jet fragmentation plays a large role in understanding parton evolution within the Quark-Gluon Plasma (QGP). In QCD emissions from jets, photons can fragment from quarks, but these fragmentation photons have not been thoroughly investigated in the context of Heavy-ion Collisions. They could offer insight for investigating jet energy loss mechanisms in the QGP medium. This...
The sPHENIX experiment at the Relativistic Heavy Ion Collider (RHIC) is designed to study the properties of the Quark-Gluon Plasma (QGP) using high-energy jets as calibrated hard probes. With high-resolution calorimetry and tracking, sPHENIX enables precision measurements of jet substructure observables that are sensitive to medium-induced modifications of parton showers. Jet substructure...
Jet transport coefficients computed in Hard-Thermal-Loop (HTL) effective theory are applicable at high temperature, while the medium created in heavy-ion collisions, at RHIC and LHC, predominantly samples the region near the QCD transition temperature. The dimensionless transport coefficient $\hat{q}/T^3$, calculated in leading order HTL theory, shows a monotonic rise with decreasing...
Measurements of heavy flavor quark correlations in heavy-ion collisions are crucial to understand the flavor dependence of quark energy loss mechanisms in hot and dense QCD matter. In addition to the heavy-ion collisions, experimental measurements of heavy flavor correlations in $p+p$ collisions can provide insights into the contributions of perturbative and non-perturbative QCD processes to...
Energy-Energy Correlator (EEC) applications to Heavy-Ion Collisions have been the subject of copious studies in recent years, namely in the exploration of the Quark-Gluon Plasma (QGP). EECs have been originally proposed to display a clear-cut scale factorization between different QCD processes, such as perturbative and non-perturbative effects, making them particularly appealing for...
The energy-energy correlator (EEC) inside jets is a sensitive observable for studying jet modification in the quark-gluon plasma (QGP). we employ an updated CoLBT-hydro framework in which a medium scale QM = 2.0 GeV is introduced to separate the vacuum and in-medium stages of the parton shower, enabling a more self-consistent treatment of jet evolution. Using a theoretical background...
Target fragmentation provides a unique window into the correlation between the struck parton and the remnant system in semi-inclusive deep-inelastic scattering. While current and past studies of nucleon structure have largely focused on current fragmentation observables, the Electron-Ion Collider will enable precision measurements in the target-fragmentation region through its high luminosity,...
We combine the tools of global event shapes and jet electric charge into a unified factorization framework to probe quark flavor dynamics in the nucleon and the hadronization process. As a concrete example, we study jet charge measurements with the 1-Jettiness global event shape for Deep Inelastic Scattering (DIS) as a quark flavor probe of unpolarized or polarized parton distribution...
We present the first results from the JETSCAPE multi-stage event generator framework for electron-ion collisions. The use of calibrated modules from the JETSCAPE framework allows common model parameters to remain unchanged between p-A and e-A simulations, thereby introducing novel constraints on these extensive simulations. The e-A event generator within the JETSCAPE framework simulates an...
