2012/08/07 by Jan Fiete Grosse-Oetringhaus
Physics and Astronomy · #Atomic physics #Charged particle #Fragmentation (computing) #Hadron #Heavy ion #High-Energy Particle Collisions Research #Ion #Large Hadron Collider #Materials science #Nuclear physics #Particle (ecology) #Particle physics #Particle physics theoretical and experimental studies #Parton #Physics #Quantum Chromodynamics and Particle Interactions #Range (aeronautics) #hep-ex #nucl-ex
paper · pdf · doi:10.1016/j.nuclphysa.2012.12.037
published as Nucl. Phys. A 910 (2013) 58-64 · Proceedings of plenary talk at the 5th international conference on hard and electromagnetic probes of high-energy nuclear collisions (Hard Probes 2012), Cagliari, Italy
arxiv created 2012/08/07 · openalex publication_date 2013/07/23 · arxiv updated 2019/08/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Angular particle correlations are a powerful tool to study collective effects and in-medium jet modification as well as their interplay in the hot and dense medium produced in central heavy-ion collisions. We present measurements of two-particle angular correlations of inclusive charged and identified particles performed with the ALICE detector. The near-side peak in the short-range correlation region is quantitatively analyzed: while the rms of the peak in ϕ-direction is independent of centrality within uncertainties, we find a significant broadening in η-direction from peripheral to central collisions. The particle content of the near-side peak is studied finding that the p/π ratio of particles associated to a trigger particle is much smaller than the one in the bulk of the particles and consistent with fragmentation of a parton in vacuum.