CGC/saturation approach for soft interactions at high energy: long range rapidity correlations

TL;DR

This paper develops a CGC/saturation-based model for high energy soft interactions, revealing a mechanism for large long-range rapidity correlations that suggest dense, strongly interacting parton systems at high energies.

Contribution

It introduces a new mechanism within the CGC/saturation framework that explains large long-range rapidity correlations in high energy soft interactions.

Findings

Large long-range rapidity correlations with $R(y_1,y_2) \,\geq \,1$

Correlation function independent of rapidity separation

Supports the idea of dense, strongly attractive parton systems

Abstract

In this paper we continue our program to build a model for high energy soft interactions, that is based on the CGC/saturation approach.The main result of this paper is that we have discovered a mechanism that leads to large long range rapidity correlations, and results in large values of the correlation function $R\Lb y_1,y_2\Rb \,\geq \,1$, which is independent of $y_1$ and $ y_2$. Such behaviour of the correlation function, provides strong support for the idea, that at high energies the system of partons that is produced, is not only dense, but also has strong attractive forces acting between the partons.