Testing Hadronic Interaction Models using a Highly Granular   Silicon-Tungsten Calorimeter
  A detailed study of hadronic interactions is presented using data recorded with the highly granular CALICE silicon-tungsten electromagnetic calorimeter. Approximately 350,000 selected negatively charged pion events at energies between 2 and 10 GeV have been studied. The predictions of several physics models available within the Geant4 simulation tool kit are compared to this data. A reasonable overall description of the data is observed; the Monte Carlo predictions are within 20% of the data, and for many observables much closer. The largest quantitative discrepancies are found in the longitudinal and transverse distributions of reconstructed energy. 
The CALICE Collaboration: B. Bilki (1)(32), J. Repond (1), J.   Schlereth (1), L. Xia (1), Z. Deng (2), Y. Li (2), Y. Wang (...
physics.ins-det hep-ex