A complete list of Lund particle type codes is summarized in the PDG: http://pdg.lbl.gov/2011/reviews/rpp2011-rev-monte-carlo-numbering.pdf

The most important particle codes are:

• electron: 11
• photon: 22
• pion-: -211
• kaon-: -321
• proton: 2212
• neutron: 2112