Probing Quark-Gluon Plasma with Large Radius Jets with ATLAS

Quark-Gluon Plasma (QGP) is a unique state of matter where quarks and gluons, normally confined within hadrons like protons and neutrons, move collectively as a low-viscosity liquid. The QGP is created through high-energy collisions of heavy-ions at relativistic speeds and jets, high collimated sprays of particles, can be used as probes to explore its properties. The ATLAS experiment at the Large Hadron Collider (LHC) has collected Pb+Pb 2018 and proton-proton 2017 data, which can be used to examine the radiation and fragmentation patterns of particles within jets. The main focus of this talk is the inclusive jet nuclear modification factor ($mathrm{R_{AA}}$), which quantifies the energy loss of jets in heavy-ion collisions compared to vacuum conditions. For the first time in ATLAS heavy-ion data, this analysis explores the energy distribution within a jet radius by comparing $mathrm{R_{AA}}$ values for jets with different radii (R=1.0 and 0.4). The performance and status of the measurement with R=1.0 jets will be discussed.