[Eic-core-phys] [EXTERNAL] MC Normalization

[Hyde, Charles E.]

Hello,
For a MC event sample of N_simu events and a quoted integrated cross section of sigma_simu,
the cross section per MC event is sigma_simu/N_simu
Thus to obtain a histogram normalized to cross section per bin,
simply multiply the number of accepted MC events in the bin by sigma_simu/N_simu
On the other hand, if the histogram is in bins of e.g. t (GeV^2) of width \Delta t
then we can obtain the
average d\sigma_simu/dt per bin by multipying the accepted MC events in the bin by
(sigma_simu/N_simu)/\Delta t

The DPAP has asked by results with an integrated luminosity of 10/fb
To obtain histograms of projected experimental statistics at 10/fb
Multiply the MC histogram by (sigma_simu/N_simu) * (10/fb)
Of course, you must express sigma_simu in femto-barns!

 plot of cross section integrated








Sincerely,

Dr. Charles E. Hyde
Eminent Scholar and University Professor of Physics
Old Dominion University
4600 Elkhorn Ave
Norfolk VA 23529
PS-II 2100D
1 (757) 683 5853