Study of strongly intense quantities and robust variances in multi-particle production at LHC energies

TL;DR

This paper investigates strongly intense quantities and robust variances in multi-particle production at LHC energies, using Monte Carlo and analytic models within a quark-gluon string framework, accounting for string fusion effects.

Contribution

It introduces a combined Monte Carlo and analytic approach to study strongly intensive variables and variances in multi-particle production, incorporating string fusion effects via a lattice model.

Findings

Calculated strongly intensive variable $oldsymbol{\Sigma(n_F, _B)}$ for various energies and rapidity window widths.

Determined scaled variance $oldsymbol{\omega_n)}$ and robust variance $oldsymbol{ ext{R}_n)}$ across energies and window sizes.

Analyzed the dependence of these quantities on the distance between rapidity window centers.

Abstract

The strongly intense quantities and robust variances in processes of multi-particle production in pp and AA interactions at LHC energies was studied. The Monte Carlo and analytic modelling of these quantities in the framework of a quark-gluon string model were implies. The string fusion effects were also taken into account by implementing of a lattice (grid) in the impact parameter plane. Strongly intensive variable $\Sigma(n_F,\ n_B)$ was calculated for different energies for two values of the width of the observation rapidity windows as a function of the distance between the centres of this windows. Scaled variance $\omega_n$ and robust variance $R_n$ for different energies and for different width of the observation rapidity window was calculated by MC simulations.