Speaker
Description
Jets and their QCD emissions are an important topic for the study of parton evolution in the QGP. Quark jets can radiate photons during their parton shower process and so far, these fragmentation photons have remained unexplored during the study of Heavy-ion Collisions. These photons will allow us to explore the EM component of the parton shower in the presence of a medium, which is currently less developed. This research utilizes the JETSCAPE framework to analyze photons found within jets, labeling them as fragmentation photons, and obtain their momentum fraction (z=pTγ/pT,jet) and angular relationship (ΔR) to the jet axis. The primary objective is to examine jet quenching by characterizing the modified photon fragmentation function and jet shape in simulations of AuAu at 200 GeV center-of-mass energy (RHIC energy) using these observables. The results of these simulations demonstrate an intriguing trend: as jet transverse momentum increases, fragmentation photons exhibit a higher momentum fraction compared to charged pions, and the physical implications of this remain to be seen. These findings facilitate the extraction of modified fragmentation functions, with potential applications on sPHENIX data collected in Run2025.
| Is this an experimental talk? | No |
|---|---|
| Is this on behalf of a collaboration? | No |
| Are you willing to present as a poster if it is not selected for oral presentation? | Yes |