Draft
From Wiki Les Houches 09
This is a working draft for an interface between one-loop amplitude programs and monte carlo programs.
Goal of the interface
The goal of the interface is to facilitate the transfer of information between one-loop programs (which we will call one-loop provider OLP) which provide one-loop matrix element and the program the does the integration over the phasespace (which we will call MC).
Model of the interaction between MC and OLE
The model of the interaction between the MC and OLE assumes two phases which we will call "initialization" and "run time".
1. Initialization
During this phase the MC sets up the OLE. This means setting up the parameters and fixing options that are offered by the OLP
- masses, width
- operating mode, for example which approximation (leading color, massless b's, ...) when different options are provided
