2019/06/01 by Maowu Nie, L. Yi, Li Yi +5
Mathematics · Physics and Astronomy · #Anisotropy #Astrophysics #Collision #Event (particle physics) #Flow (mathematics) #Hadron #High-Energy Particle Collisions Research #Mathematics #Mechanics #Momentum (technical analysis) #Nuclear physics #Particle physics theoretical and experimental studies #Parton #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Range (aeronautics) #State (computer science) #hep-ph #nucl-ex #nucl-th
paper · pdf · doi:10.1103/physrevc.100.064905
published as Phys. Rev. C 100, 064905 (2019) · 5 pages, 3 figures
arxiv created 2019/06/01 · openalex publication_date 2019/12/16 · arxiv updated 2019/12/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
A multiphase transport model is used to understand the origin of long-range collective azimuthal correlations in small-system collisions. To disentangle between collectivity associated with initial-state intrinsic momentum anisotropy and the collectivity arising as a final-state response to the collision geometry, we studied the development of collectivity in 5.02-TeV p+Pb collisions with both initial-state and final-state effects included. We find that the initial momentum anisotropy may not be fully isotropized through parton interactions, and the final-state partonic collectivity in general is correlated with both the initial momentum anisotropy and the shape of the collision geometry. The initial momentum anisotropy also influences the event-by-event fluctuation of collective flow. Therefore, the mere evidence of the geometry response of the collective flow cannot rule out the presence of large contributions from the initial state.