2022/08/30 by Hannah Bossi, Bossi, Hannah · 1 citation
Physics and Astronomy · #FOS: Physical sciences #High-Energy Particle Collisions Research #Nuclear Experiment (nucl-ex) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.2208.14492
openalex publication_date 2022/08/30 · openalex created_date 2023/02/13 · openalex updated_date 2026/07/28
Jets in relativistic heavy-ion collisions (HICs) interact with the quark-gluon plasma (QGP), leading to effects such as a suppression of jet yields and a modification of internal jet structure that are used to measure the properties of the QGP. These proceedings show the inclusive jet nuclear modification factors in Pb--Pb collisions in various centrality classes at √s\rm NN = 5.02 TeV recorded with the ALICE detector for resolution parameters up to R = 0.6 for momenta down to 40 GeV/c. The analysis utilizes machine learning techniques to correct the large background in HICs, extending the measurement of inclusive jets to lower jet pT and larger R than previously achieved in HICs at the LHC. A new suite of measurements characterizing groomed jet splittings using both the Soft Drop and Dynamical Grooming algorithms in central and semi-central Pb--Pb collisions will also be presented. The groomed jet radius, θ\rm g≡ R\rm g/R, the groomed jet momentum fraction, z\rm g, and the transverse momentum of the groomed splitting, k\rm T, g are also reported. All measurements are fully corrected through unfolding and compared to various theoretical calculations.