Geant4 QGSP_BERT_NQE hadronic model

• QGSP_BERT and QGSP_BERT_EMV (see and recommending physics lists)
  Like QGSP, but using Geant4 Bertini cascade for primary protons, neutrons, pions and Kaons below ~10GeV. In comparison to experimental data we find improved agreement to data compared to QGSP which uses the low energy parameterised (LEP) model for all particles at these energies. The Bertini model produces more secondary neutrons and protons than the LEP model, yielding a better agreement to experimental data.

  QGSP_BERT_EMV is like QGSP_BERT, but parameters of electromagnetic processes tuned to yield better cpu performance with only slightly less precision.

  Both QGSP_BERT and QGSP_BERT_EMV are less CPU performant as QGSP.

• QGSP_NEQ, QGSP_EMV_NQE, and QGSP_BERT_NQE
  These lists correspond to teh lists without the trailing _NQE, except that here the quasi-elastic channel for high energy inelastic reactions is ignored. This quasi-elastic channel was missing from string model based physics lists prior to release 8.3. To allow comparison to results obtained with older releases of Geant4, i.e. 8.2 and before, these lists are provided for a transisition period.

• Plots : neutrons Enegy and positions for each process