There is small energy-momentum non-conservation which in some cases may provide wrong distributions for thin and light target experiments. The problem is created at G4HadronicInteraction class at PostStepDoIt when all final particles are rotated on random angle. Pramary scatted particle is not rotated, so the balance is broken - our HARP collegues observing cases when both scattered and recoiled particles have the same phi angle instead of opposite. Other minor problem: in the G4ElasticHadrNucleusHE the mass of a recoil nucleus is roughly estimated , not taken from G4ParticleDefinition.
ok. as discussed.
