I am very beginner to solve this type of problem. So, I need help !
I have three trees in one root file(pion, kaon, dst). Inside that I am saving px,py,pz,E and event number.They have different entries. I want to store only those information which is coming from the same event.
Could you please suggest me how to do this ?
I have entry in dst tree(1762), pion(6104), kaon(6104). As they have different entries, so I cannot do any arithmetic operation(addition or subtraction). If I could store them inside a single tree means in an event where all(kaon, pion and dst) were generated. That might solve the problem.
Could you please give me some idea how to solve this problem ?
Thanks in Advance.
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