Update MC pt shape syst

[u/mrichter/AliRoot.git] / STEER / AliKFVertex.h

diff --git a/STEER/AliKFVertex.h b/STEER/AliKFVertex.h
index 99bd0916acf1e7a06fc3ddeb50c1ad69f26ed283..9f3fa58fc94fab2482773bc5ae6cd8b535dd0cd4 100644 (file)
--- a/STEER/AliKFVertex.h
+++ b/STEER/AliKFVertex.h
@@ -49,7 +49,7 @@ class AliKFVertex : public AliKFParticle
 
   //* Number of tracks composing the vertex
 
-  Int_t GetNContributors() const { return (fNDF+3)/2; }
+  Int_t GetNContributors() const { return fIsConstrained ?fNDF/2:(fNDF+3)/2; }
 
   //* 
   //* CONSTRUCTION OF THE VERTEX BY ITS DAUGHTERS