aMCfast is hosted by Hepforge, IPPP Durham

aMCfast - A fast interface between MadGraph5_aMC@NLO and APPLgrid


Analysis file examples

Here we provide two examples, one for the TopDrawer analysis and the other for the ROOT analysis. They are both written in Fortran but they call different histogramming routines that lead to histograms in the two formats. They must be placed in the "FixedOrderAnalysis" subfolder of the running directory and consistently linked, according to their format, in the fixed-order card as explained in the instructions section.

Note that in both the analysis files linked below there is the possibility to change the parameters of the interpolation grid (number of nodes of the x-space and Q-space grid, interpolation orders, etc.) as compared to default values, that are:

      appl_Q2min   = 100d0        ! Lower bound of the Q2-space grid
      appl_Q2max   = 1000000d0    ! Upper bound of the Q2-space grid
      appl_xmin    = 2d-7         ! Lower bound of the x-space grid
      appl_xmax    = 1d0          ! Upper bound of the x-space grid
      appl_nQ2     = 30           ! Number of nodes of the Q2-space grid
      appl_Q2order = 3            ! Interpolation degree on the Q2-space grid
      appl_nx      = 50           ! Number of nodes of the x-space grid
      appl_xorder  = 3            ! Interpolation degree on the x-space grid
    
just by commenting in the common blocks and the desired parameter in the initialization routine and by setting it to the preferred value.

  • TopDrawer analysis file linked here.
  • ROOT analysis file linked here.