Event selection tuning and Luminosity

The plots I've been showing must be looked at carefully. The selection of events I am doing up to now are "non-standard" and not properly tuned. I still have to check the standard cuts for ZH event selection, together with my cuts, in order maximise the statistics.

One also have to have in mind that the number of events in the samples corresponds to 6.6 the nominal luminosity (L), where L=500fb-1. So, divide the Y axis by 6.6 to get the "correct" number of events. A fine tuning of the selection is very important to get enough statistics of H into c cbar.