Two-particle Correlations in multi-Regge Kinematics

TL;DR

This paper compares two theoretical models, Chew-Pignotti and BFKL, for predicting two-particle correlations in multi-jet events with large rapidity gaps at the LHC, testing their effectiveness in high-energy QCD.

Contribution

It provides a comparative analysis of old and new models for multi-jet production, focusing on rapidity distributions and correlations in high-energy collisions.

Findings

BFKL predictions differ significantly from Chew-Pignotti in rapidity correlations.

The models show distinct behaviors in the distribution of jets across rapidity.

Results help refine understanding of multi-particle production mechanisms.

Abstract

Multi-jet production at the LHC is an important process to study. In particular, events with final state kinematic configurations where we have two jets widely separated in rapidity with similar pT and lots of mini-jets or jets populating the space in between are relevant for the high energy limit of QCD. Keeping the jet multiplicity fixed, the study of these events is a good ground to test different models of multi-particle production in hadron-hadron collisions. We report on a comparison between the predictions of the old multiperipheral Chew-Pignotti model and those of BFKL for the single jet rapidity distributions and for jet-jet rapidity correlations.