I simulated a 120GeV proton beam went though the 3mm PVT scintillator.
The plot below shows the energy deposition in the scintillator. So on average the energy loss rate is about 180 KeV/mm.
But when I check the PDG data table, I can only find the data of muon in PVT. https://pdg.lbl.gov/2018/AtomicNuclearProperties/MUE/muE_polyvinyltoluene.pdf
120 GeV proton has the same \gamma\beta as 13.4 GeV muon, so from the table above, I should expect energy loss rate to be about 255 KeV/mm (2.48*1.032(g/cm^3)*100). This is different from what I get from simulation.
Does anyone may know the reason?