Further results on peripheral-tube model for ridge correlation

TL;DR

This paper extends the peripheral-tube model to multiple randomly distributed tubes, showing that two-particle correlations remain stable regardless of tube number, and highlighting the causal connection of ridge structures in both longitudinal and azimuthal directions.

Contribution

The study introduces a multi-tube extension of the peripheral-tube model, demonstrating its robustness and providing insights into the causal nature of ridge structures in heavy-ion collisions.

Findings

Two-particle correlation is nearly independent of the number of tubes.

Flow distribution becomes strongly event-dependent with more tubes.

Ridge structures are causally connected in both longitudinal and azimuthal directions.

Abstract

Peripheral one-tube model has shown to be a nice tool for dynamically understanding several aspects of ridge structures in long-range two-particle correlations, observed experimentally and obtained also in our model calculations using NexSPheRIO code. Here, we study an extension of the model, to initial configurations with several peripheral tubes distributed randomly in azimuth. We show that the two-particle correlation is almost independent of the number of tubes, although the flow distribution becomes indeed strongly event dependent. In our picture, the ridge structures are causally connected not only in the longitudinal direction but also in azimuth.