TESTING THE BINNED METHOD

Let me re-explain :

Select the neutrino type (manual, user input)
shoot X,Y according to the correct PDF
locate the correct X,Y bin
shoot E according to the event rate spectrum '''in this X,Y bin'''

In the following plots:
*RED : obtained from JNUBEAM|NEUT,using the official JNUBEAM ntuples
*BLUE : obtained by shooting 10⁷ random neutrinos with the above mentioned method
BLUE is always on top of red, showing the code is correct.

NOTE : for nues and numubars the error bars in the red histograms seem to vary wildly. I believe that's a consequence of the 'norm' weight from JNUBEAM (that sets the correct branching ratios etc.). It could also be a consequence of the hit and miss method : I suspect that for certain classes of non-isotropic decays in the CM the probability to hit the detector might be very low...???????