Adding root resolution script to generate resolution along z

getResoultion.C

@@ -0,0 +1,17 @@
+double getResolution(double ctheta0, int N){
+    double s=0;
+    for (int i=0;i<N;i++){
+        double ctheta=1-(i+0.5)/(N-1.0)*(1-ctheta0);
+        double stheta2=1-ctheta*ctheta;
+        s+=stheta2;
+    }
+    return s/N;
+}
+
+double getResolutionT(double ctheta0, int N){
+    double s=0;
+    for (int i=0;i<N;i++){
+        double ctheta=1-(i+0.5)/(N-1.0)*(1-ctheta0);
+        s+=ctheta*ctheta;
+    }
+    return s/N;