Search for proton excess in primary vtx: Pythia 5
This is a plot of the average charge versus kaonicity for tracks in primary vertex. For Golden mode there is a clear trend towards a positive excess at large kaonicity which means kaon (or proton) is favored over pion hypothesis.
Generally the effect in Pythia 5 larger than in data. Several bins are dramatically different between data and MC. Wonder what’s up with this?