Abstract
During the last five years, development of GEANT4 hadronic physics models has been driven largely by the anticipated turn-on of the LHC detectors and the subsequent comparison of new data with the simulated detector responses.
Work has concentrated on three main areas: hadronic model improvement for high energy string models, intranuclear cascade models, precompound and de-excitation models, and elastic scattering which are currently used in the simulation of LHC experiments. These development are tested against a large collection of thin target data and dedicated test beam experiments using calorimeter prototypes. Salient improvements in physics and computing performance of these models will be discussed.
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