2010/09/30 by Emil Avsar, Christoffer Flensburg, Yoshitaka Hatta +2
Physics and Astronomy · #Context (archaeology) #Elliptic flow #Event generator #Geometry #Hadron #Heavy ion #High-Energy Particle Collisions Research #Ion #Large Hadron Collider #Monte Carlo method #Multiplicity (mathematics) #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Parton #Physics #Proton #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quark–gluon plasma #hep-ex #hep-ph
paper · pdf · doi:10.1016/j.physletb.2011.07.031
published as Phys.Lett.B702:394-397,2011 · v2: Four-particle correlation added, improved discussions on the signatures of flow. v3: Improved treatment of fluctuations in the flow analysis. v4: Minor changes for journal submission
arxiv created 2011/07/20 · openalex publication_date 2011/07/24 · arxiv updated 2011/08/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
It has been argued that high-multiplicity proton–proton collisions at the LHC may exhibit collective phenomena usually studied in the context of heavy-ion collisions, such as elliptic flow. We study this issue using DIPSY—a Monte Carlo event generator based on the QCD dipole model. We calculate the eccentricity of the transverse area defined by the spatial distribution of produced gluons. The resulting elliptic flow is estimated to be about 6 % , comparable to the value in nucleus–nucleus collisions at RHIC and the LHC. Experimentally, elliptic flow is inferred from the azimuthal correlation between hadrons, which receives contributions from collective flow, and from various other effects referred to as “nonflow”. We discuss how to identify in experiments the signal of flow in the presence of large nonflow effects.