Forward-backward multiplicity correlations in pp collisions at high energy in Monte Carlo model with string fusion

TL;DR

This paper investigates forward-backward multiplicity correlations in high-energy proton-proton collisions using a Monte Carlo model that incorporates string fusion, showing improved agreement with experimental data.

Contribution

It introduces a Monte Carlo model with string fusion effects to better describe multiplicity correlations in pp collisions at high energies.

Findings

String fusion improves model-data agreement.

Correlation strength depends on window width and position.

Transverse momentum range influences correlation patterns.

Abstract

The correlations between multiplicities in two separated rapidity windows, is studied in the framework of the Monte Carlo model based on the picture of string formation in elementary collisions of colour dipoles. The hardness of the elementary collisions is defined by a transverse size of the interacting dipoles. The dependencies of the forward-backward correlation strength on the width and position of the pseudorapidity windows, as well as on transverse momentum range of observed particles were studied. It is demonstrated that taking into account of the string fusion effects improves the agreement with the available experimental data.