Comments on the observation of high multiplicity events at the LHC

TL;DR

This paper analyzes high multiplicity events at the LHC, attributing observed correlations mainly to dijet production, and suggests further data analysis to understand underlying gluon fluctuations and collision dynamics.

Contribution

It proposes a combined explanation for high multiplicity events involving impact parameter effects, gluon density fluctuations, and dijet fragmentation, and suggests data analysis methods to explore these factors.

Findings

Correlations mainly due to dijet production with p_t > 15 GeV/c

High multiplicity events result from impact parameter, gluon fluctuations, and dijet fragmentation

Data analysis can clarify underlying gluon dynamics and fluctuations

Abstract

We analyze the structure of the high multiplicity events observed by the CMS collaboration at the LHC. We argue that the bulk of the observed correlations is due to the production of a pair of jets with p_t > 15 GeV/c. We also suggest that high multiplicity events are due to a combination of three effects: high underlying multiplicity for collisions at small impact parameters, upward fluctuations of the gluon density in the colliding protons, and production of hadrons in the fragmentation of dijets. The data analysis is suggested which may clarify the underlying dynamics of the high multiplicity events and probe fluctuations of the gluon field as a function of x.