Corrected for a bug in StepManager: wrong labelling of the 3-momentum in CPV tracking

[u/mrichter/AliRoot.git] / PHOS / AliPHOSv1.cxx

diff --git a/PHOS/AliPHOSv1.cxx b/PHOS/AliPHOSv1.cxx
index d2017d41147e32f9f4b63b6f3b4911948ff0b666..23c0c49305ee8dbe4724cb99e268a497ef131d89 100644 (file)
--- a/PHOS/AliPHOSv1.cxx
+++ b/PHOS/AliPHOSv1.cxx
@@ -292,8 +292,8 @@ void AliPHOSv1::StepManager(void)
     
     Float_t        xyd[3]={0,0,0}   ;   //local posiiton of the entering
     xyd[0]  = xyzd[0];
-    xyd[1]  =-xyzd[2];
-    xyd[2]  =-xyzd[1];
+    xyd[1]  =-xyzd[1];
+    xyd[2]  =-xyzd[2];
     
     // Current momentum of the hit's track in the local ref. system
     TLorentzVector pmom     ;        //momentum of the particle initiated hit
@@ -304,8 +304,8 @@ void AliPHOSv1::StepManager(void)
     
     gMC -> Gmtod (pm, pd, 2);        // transform 3-momentum from master to daughter system
     pmom[0] = pd[0];
-    pmom[1] =-pd[2];
-    pmom[2] =-pd[1];
+    pmom[1] =-pd[1];
+    pmom[2] =-pd[2];
 
     // Digitize the current CPV hit: