2020/02/29 by Y. He, Yayun He, Shanshan Cao +9
Physics and Astronomy · #Astrophysics #Event (particle physics) #Hadron #High-Energy Particle Collisions Research #Jet (fluid) #Jet quenching #Large Hadron Collider #Materials science #Mechanics #Nuclear physics #Particle physics theoretical and experimental studies #Parton #Physics #Quantum Chromodynamics and Particle Interactions #Range (aeronautics) #hep-ph #nucl-th
paper · pdf · doi:10.1016/j.nuclphysa.2020.122032
4 pages, 3 figures, contribution to the proceedings of XXVIIIth International Conference on Ultrarelativistic Nucleus-Nucleus Collisions (Quark Matter 2019)
openalex created_date 2020/02/24 · arxiv created 2020/08/03 · openalex publication_date 2020/12/11 · arxiv updated 2021/02/03 · openalex updated_date 2026/08/05
The observed inclusive jet suppression in heavy-ion collisions at LHC has a very weak pT dependence over a large range of pT = 50-1000 GeV and is almost independent of the colliding energy, though the initial energy density of the bulk medium has increased from √(s) = 2.76 to 5.02 TeV by about 20%. This interesting phenomenon is investigated in the linear Boltzmann transport (LBT) model for jet propagation in an event-by-event 3+1D hydro background. We show that the pT dependence of jet RAA is determined by the initial spectrum in p+p collisions and pT dependence of jet energy loss. Furthermore, jet energy loss distributions for inclusive jet and γ-jet at both LHC energies are extracted directly from experimental data through the state-of-art Bayesian analysis. The averaged jet energy loss has a weak pT dependence and the scaled jet energy loss distributions have a large width, both of which are consistent with the LBT simulations and indicate that jet quenching is caused by only a few out-of-cone jet medium scatterings.