--- PamCut/CollectionActions/Histo2DActions/MassVsRigHistoAction/MassVsRigHistoAction.cpp	2010/04/05 11:28:22	1.2
+++ PamCut/CollectionActions/Histo2DActions/MassVsRigHistoAction/MassVsRigHistoAction.cpp	2010/04/07 10:31:43	1.3
@@ -17,6 +17,7 @@
 
 void MassVsRigHistoAction::OnGood(PamLevel2 *event) {
     Float_t betaev = event->GetTrack(0)->GetToFTrack()->beta[12];
+    if(betaev>1) betaev = 2-betaev;
     Float_t rigev = 1./event->GetTrack(0)->GetTrkTrack()->GetDeflection();
     Float_t Mass = _Z*rigev*sqrt(pow(betaev,-2)-1);
     Fill(rigev, Mass);