Particle Production in the Central Region at LHC Energies

TL;DR

This paper analyzes the first LHC proton-proton collision data using Regge phenomenology and the Quark-Gluon String Model, predicting cross sections and secondary particle densities that align well with experimental measurements.

Contribution

It provides theoretical predictions for LHC pp collision observables based on established models, confirming their validity with recent experimental data.

Findings

Total inelastic cross section matches ATLAS and CMS measurements.

Inclusive densities in the central region agree within 10-15%.

Model parameters fixed at lower energies successfully predict high-energy data.

Abstract

We consider the first LHC data for pp collisions in the framework of Regge phenomenology, and the Quark-Gluon String Model, and we present the corresponding predictions for both the integral cross sections and the inclusive densities of secondaries, that are determined by Pomeron exchange. All parameters were fixed long time ago for the description of the data at fixed target energies. The first measurements of the total inelastic cross section by ATLAS and CMS Collaborations are in agreement with our calculations. Also the inclusive densities measured in the central region are in agreement with our theoretical predictions on the accuracy level of about 10-15%.