Normalize two histograms coming from two different files with different cross sections

Hi everyone,
Screenshot from 2022-04-24 10-45-08-converted.pdf (36.0 KB)

I am trying to plot two histograms in a same canvas using data from two different files. These two files correspond to signal and background and they have different cross sections. As they have different cross sections the event numbers are different for them. I want to normalize them and plot them in a same canvas like the plot I have attached here. Can anybody help me to do that?

ROOT Forum → Search → DrawNormalized