Landau in ROOT vs Landau in CLHEP 
 Lognumber 40. 
 Submitted on Sun, 17 Aug 2025 - 00:25:44 CEST
  Marker: simulation
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In CLHEP, x_max does not depend on sigma and is pretty accurate: x_max == mu
In ROOT, x_max = mu - 0.22*sigma
The comparaison done with sigma = 1 and 6.
It is very important to take into account as in GEMC we use CLHEP instead of ROOT.
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