Gaussian Broadening (smearing) using Mean and Sigma


My Geant4 simulation produces a ROOT file with and a histogram of total energy deposited in each event. Simply put, I am wondering how to apply Gaussian broadening to the histogram/peak? I have a mean and a sigma, and I need to generate a random gaussian value corresponding to this for each event, which I should be able to fill in to a new histogram.

Any ideas, suggestions, or workable examples to start with please?

What to can do is generate data from the histogram, using TH1::GetRandom and add the smearing to the obtained data and then fill a new histogram.


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