From 81ef6d2ecc53d1035208124e43361dd318785c21 Mon Sep 17 00:00:00 2001
From: LucasNL <nunes.lopes@ufrgs.br>
Date: Mon, 19 Jul 2021 18:58:11 -0300
Subject: [PATCH] Bug fix on minuit fitter

---
 TrackFitter.cxx | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/TrackFitter.cxx b/TrackFitter.cxx
index 2af1a0e..aa549af 100644
--- a/TrackFitter.cxx
+++ b/TrackFitter.cxx
@@ -273,12 +273,10 @@ void TrackFitter::MinuitFit(FT3Track& track)
   //}
 
   double arglist[100];
-  arglist[0] = 0;
+  arglist[0] = 1;
   // set print level
   minuit->ExecuteCommand("SET PRINT", arglist, 2);
 
-  //eu posso simplesmente buscar os parametors e imprimir de novo
-
   // minimize
   arglist[0] = 10000; // number of function calls
   arglist[1] = 0.001; // tolerance
@@ -334,10 +332,10 @@ void myFitFcn(Int_t&, Double_t*, Double_t& fval, Double_t* p, Int_t)
   for (auto z : zPositionsMFT) {
     // Propagate to Z
     tempTrack.propagateParamToZhelix(z, fieldZ);
-    tmp = (TrackFitter::PosX[i] - tempTrack.getX()) / TrackFitter::ErrorsX[i];
-    chi2 += tmp * tmp;
-    tmp = (TrackFitter::PosY[i] - tempTrack.getY()) / TrackFitter::ErrorsY[i];
-    chi2 += tmp * tmp;
+    tmp = TrackFitter::PosX[i] - tempTrack.getX();
+    chi2 += tmp*tmp / TrackFitter::ErrorsX[i];
+    tmp = TrackFitter::PosY[i] - tempTrack.getY();
+    chi2 += tmp*tmp / TrackFitter::ErrorsY[i];
     i++;
   }
   fval = chi2;