diff -N HpsHelicalTrackFit.java
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ HpsHelicalTrackFit.java	20 Oct 2012 06:13:39 -0000	1.1
@@ -0,0 +1,57 @@

+package org.lcsim.hps.recon.tracking;
+
+//--- java ---//
+import java.util.Map;
+
+//--- hep ---//
+import hep.physics.matrix.SymmetricMatrix;
+
+import org.lcsim.event.MCParticle;
+//--- lcsim ---//
+import org.lcsim.fit.helicaltrack.HelicalTrackFit;
+import org.lcsim.fit.helicaltrack.HelicalTrackHit;
+import org.lcsim.fit.helicaltrack.MultipleScatter;
+
+/**
+ * 
+ * @author Omar Moreno
+ * @version $Id: HpsHelicalTrackFit.java,v 1.1 2012/10/20 06:13:39 omoreno Exp $ 
+ */
+public class HpsHelicalTrackFit extends HelicalTrackFit {
+
+    MCParticle mcParticle;
+    
+    /**
+     * Constructor
+     * @param parameters : an array of helix parameters
+     * @param covariance : covariance matrix of the helix fit
+     * @param chiSquared : chi squared of the circle fit
+     * @param ndf : number of degrees of freedom for the circle fit
+     * @param sMap : a map containing the x-y path lengths
+     * @param msMap : a map containing the multiple scattering uncertainties 
+     * @param mcParticle : the MC particle associated with the fit
+     */
+    public HpsHelicalTrackFit(double[] parameters, SymmetricMatrix covariance, double[] chiSquared, int[] ndf,
+            Map<HelicalTrackHit, Double> sMap, Map<HelicalTrackHit, MultipleScatter> msMap, MCParticle mcParticle){
+        super(parameters, covariance, chiSquared, ndf, sMap, msMap);
+        
+        // Set the MC particle associated with this fit
+        this.setMCParticle(mcParticle);
+    }
+    
+    /**
+     * Get the MC Particle associated with the HelicalTrackFit
+     * @return mcParticle : 
+     */
+    public MCParticle getMCParticle(){
+        return this.mcParticle;
+    }
+    
+    /**
+     * Set the MC Particle associated with the HelicalTrackFit
+     * @param mcParticle : 
+     */
+    public void setMCParticle(MCParticle mcParticle){
+        this.mcParticle = mcParticle;
+    }
+}