Eur. Phys. J. C (2008) 56: 323-332
https://doi.org/10.1140/epjc/s10052-008-0679-2

Regular Article - Experimental Physics

Comparison of Geant4 hadron generation with data from the interactions with beryllium nuclei of +8.9 GeV/c protons and pions and −8.0 GeV/c pions

¹ Joint Institute for Nuclear Research (JINR), Dubna, Russia
³ CERN, Geneva, Switzerland
⁴ Politecnico di Milano and INFN, Sezione di Milano-Bicocca, Milano, Italy
⁵ Institute of High Energy Physics (IHEP), Protvino, Russia

^* e-mail: joerg.wotschack@cern.ch

Received: 18 April 2008
Revised: 24 June 2008
Published online: 5 August 2008

Abstract

Hadron generation in the Geant4 simulation tool kit is compared with inclusive spectra of secondary protons and pions from the interactions with beryllium nuclei of +8.9 GeV/c protons and pions, and of −8.0 GeV/c pions. The data were taken in 2002 at the CERN Proton Synchrotron with the HARP spectrometer. We report on significant disagreements between data and Monte Carlo simulation especially in the polar-angle distributions of secondary protons and pions.