Status of QGSJET
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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