Invariant mass specifying vertex
Dear community,
I am new to madanalysis and trying to plot an invariant mass of leptons, coming from the same vertex. The Issue is that I have more that one such vertices. I've tried to find a solution and come up so far only with an idea that I could use the information about the mother particles to do so.
To be more specific, this is the process (It's in in NMSSM and sferm state for sfermions s for simplicity they are not taken into account): g g > h01 > n3 n2 , n2 > n1 l+ l- /sferm , (n3 > n2 l+ l- /sferm , n2 > n1 l+ l-/sferm) (I would attach the graph but don't see such an option). So, for example, I have l+ l- that has the following parents: l+ l- < z < n2 < n3 < h01 and l+ l- < z < n2 < h01. There is no problem with plotting M(l- < z < n2 < n3 l+ < z < n2 < n3) but if I want to plot M(l- < z < n2 l+ < z < n2), I get the historgam for all combinations of leptons in both chains. To deal with this, I tried plotting M(l- < z < n2 < h01 l+ < z < n2 < h01) but the histogram appears empty. Same holds for easier plots: PT(l+ < z < n3) works just fine but PT(l+ < z < n3 < h01) is empty.
My question is: if there is a way to distinguish between those branches and/or achieve the desired result using a different approach?
Thanks in advance!
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