Gamma-Gamma matrix in root

Hi All,

I am a newbie on root. I am trying to find a way to make a gamma-gamma matrix from the data that I am using. Earlier I had done the calibration part.
what should be the next step after calibration?

Have a nice day.

It is a bit vague. Can you post what you have done already ?
May be some colleague close to you can help ?
There is many ways to do “matrix” in ROOT… (standard C++ vectors, TMatrix, even 2D histograms …)

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