Implementing a 3D histogram version of the Energy-Test in ROOT

E. O. Cohen, I. D. Reid, E. Piasetzky

Research output: Contribution to journalArticlepeer-review


Comparing simulation and data histograms is of interest in nuclear and particle physics experiments; however, the leading three-dimensional histogram comparison tool available in ROOT, the 3D Kolmogorov-Smirnov test, exhibits shortcomings. Throughout the following, we present and discuss the implementation of an alternative comparison test for three-dimensional histograms, based on the Energy-Test by Aslan and Zech. The software package can be found at


  • Energy-Test
  • Goodness of fit
  • ROOT
  • Two-sample test


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