Temporal evolution of tubular initial conditions and their influence on two-particle correlations in relativistic nuclear collisions

Understand

Relativistic nuclear collisions data on two-particle correlations exhibit structures as function of relative azimuthal angle and rapidity.

• A unified description of these near-side and away-side structures is proposed for low to moderate transverse momentum.
• It is based on the combined effect of tubular initial conditions and hydrodynamical expansion.
• Contrary to expectations, the hydrodynamics solution shows that the high energy density tubes (leftover from the initial particle interactions) give rise to particle emission in two directions and this is what leads to the various structures.