Collective dynamics of the p-Pb collisions at the LHC

TL;DR

This paper reviews evidence for collective behavior in high-multiplicity p-Pb collisions at the LHC, modeled through a three-stage process involving initial conditions, hydrodynamics, and hadronization.

Contribution

It demonstrates that a three-stage model accurately describes soft collective phenomena observed in ultrarelativistic p-Pb collisions.

Findings

Reproduction of ridge structures in two-particle correlations

Agreement with measured elliptic and triangular flow coefficients

Observation of mass hierarchy in flow-sensitive observables

Abstract

We review the signatures for the soft collective dynamics in highest-multiplicity ultrarelativistic p-Pb collisions and show that the effects are well described in a three-stage model, consisting of the event-by-event Glauber initial conditions, viscous 3+1D hydrodynamics, and statistical hadronization. In particular, we discuss the ridges in two-particle correlations in the relative azimuth and pseudorapidity, the elliptic and triangular flow coefficients, and the mass hierarchy of observables sensitive to flow.