Sensitivity paper: Apply relevant data-cuts

[Shoram444]

List of data-cuts to use:

(Use SNCuts module. )
Event has:

• 2 foil vertices
• 2 calo hits
• 2 tracks !Question: negative or straight?
• 2 associated calohits (make sure they are 2 different OMs!) -> added filter in SNCuts
• ToF (4% Pint, 1% Pext)
• Vertex distance !Question: how much? -> make ROI analysis?
• $E_{sum} \in (300, 3500)~$ keV
• Track length !Question: how much? Do we even need it? @miroslav-macko check?

Include gamma tracking in TK reconstruction

[miroslav-macko]

I have these questions for discussion and remarks:

1. I would focus on limit without magnetic field - so we search for two tracks.
2. About associated cuts - Maybe it makes sense to have a specific case when the electrons end up in the same OM? How many of these cases happen (in %)?
3. I would have a look at the distribution of vertices and then estimate the width of bkg and signal. I would also compare this with the approach Filip got based on the Bi-207 (real) data. He also needed this cut and the values should be in principle similar.
4. Track length might be useful despite having Pint and Pext. Pint and Pext tells us whether the time of flight and the length of the track are consistent with expected speed of the particle (in relativistic sense). But this does not account for the fact that the longer the track is the more energy electron looses and we can expect more problems when trying to correct the energy losses. If I remember right Filip was using 400 mm - 1000 mm (to be checked exactly). When doing real analysis this is where his energy corrections are valid and we should also respect that.
5. Unless there is a strong reason to think otherwise I would treat these cuts as independent and keep the possibility of multidimensional cut as "beyond the scope of the article" and "potential for future research".