else return kFALSE;
}
//====================================
-Bool_t AliMUONTrackLight::IsDiquark(Int_t pdg){
+Bool_t AliMUONTrackLight::IsDiquark(Int_t pdg) const{
/// check if the provided pdg code corresponds to a diquark
pdg = TMath::Abs(pdg);
if((pdg > 1000) && (pdg%100 < 10)) return kTRUE;