Collective flow from AA, pA to pp collisions - Toward a unified paradigm

Abstract

I give an overview of the latest development in understanding collective phenomena in high-multiplicity hadronic final state from relativistic nucleus-nucleus, proton-nucleus and proton-proton collisions. Upon reviewing the experimental data and confronting them with theoretical models, a unified paradigm in describing the observed collectivity across all hadronic collision systems is emerging. Potential future paths toward addressing key open questions, especially on collectivity in small systems (pp, pA), are discussed.

9 pages, 6 figures, plenary contribution to Quark Matter 2017, February 5-11 (2017), Chicago (IL), USA

References in corpus (11)

• Observation of long-range near-side angular correlations in proton-lead collisions at the LHC
• Evidence for collectivity in pp collisions at the LHC
• The ridge in proton-proton collisions at the LHC
• Evidence for collective multi-particle correlations in pPb collisions
• Correlated event-by-event fluctuations of flow harmonics in Pb-Pb collisions at $\sqrt{s_{{}_{\mathrm{NN}}}}=2.76$ TeV
• Long-range two-particle correlations of strange hadrons with charged particles in pPb and PbPb collisions at LHC energies
• Mass ordering of spectra from fragmentation of saturated gluon states in high multiplicity proton-proton collisions
• $v_4$, $v_5$, $v_6$, $v_7$: nonlinear hydrodynamic response versus LHC data
• 3-D Glasma initial state for relativistic heavy ion collisions
• Mode-coupling effects in anisotropic flow in heavy-ion collisions
• Multiplicity and rapidity dependence of strange hadron production in pp, pPb, and PbPb collisions at the LHC

Cited by in corpus (7)

• Heavy Ion Collisions: The Big Picture, and the Big Questions
• Hydrodynamic flow in small systems, or: "How the heck is it possible that a system emitting only a dozen particles can be described by fluid dynamics?"
• Global flow structure and exact formal transseries of the Gubser flow in kinetic theory
• (3+1)-dimensional anisotropic fluid dynamics with a lattice QCD equation of state
• Differential two-particle number and momentum correlations with the AMPT, UrQMD, and EPOS models in Pb-Pb collisions at $\sqrt{{\text{s}}_{{}_{\mathrm{NN}}}}$= 2.76 TeV
• Collectivity in large and small systems formed in ultrarelativistic collisions
• Quasi equilibrium state of expanding quantum fields and two-pion Bose-Einstein correlations in $pp$ collisions at the LHC