Early dynamics of transversally thermalized matter

TL;DR

This paper proposes that the early stage of matter created in heavy-ion collisions is transversally thermalized and evolves according to transverse hydrodynamics, aligning with RHIC data and potentially resolving early equilibration issues.

Contribution

It introduces a model where early parton dynamics are governed by transverse hydrodynamics, providing a new perspective on initial thermalization in heavy-ion collisions.

Findings

Transversally thermalized matter is compatible with RHIC data.

Early dynamics can be described by transverse hydrodynamics.

This approach may address the problem of early thermalization.

Abstract

We argue that the idea that the parton system created in relativistic heavy-ion collisions is formed in a state with transverse momenta close to thermodynamic equilibrium and its subsequent dynamics at early times is dominated by pure transverse hydrodynamics of the perfect fluid is compatible with the data collected at RHIC. This scenario of early parton dynamics may help to solve the problem of early equilibration.