TL;DR
This paper reviews the QGSJET model's physics foundations, discusses recent updates, compares predictions with accelerator data, and outlines future developments including LHC input to improve high-energy hadronic interaction modeling.
Contribution
It provides a detailed discussion of the QGSJET model's physics basis, updates to version II.03, and compares its predictions with experimental data.
Findings
QGSJET II.03 predictions align with selected accelerator data.
The model incorporates soft and semihard parton dynamics.
Future LHC data will help refine the model.
Abstract
Basic physics concepts of the QGSJET model are discussed, starting from the general picture of high energy hadronic interactions and addressing in some detail the treatment of multiple scattering processes, contributions of ``soft'' and ``semihard'' parton dynamics, implementation of non-linear interaction effects. The predictions of the new model version (QGSJET II.03) are compared to selected accelerator data. Future developments are outlined and the expected input from the LHC collider for constraining model predictions is discussed.
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