Elegent

Elegent (Elastic Event GENeraTor) is a Monte-Carlo generator of (anti-)proton-proton collisions, based on a number of theoretical/phenomenological models.

The project is maintained by Jan Kašpar (contact info at the ​home page).

Physics

• models of hadronic/strong interaction
• description of Coulomb interaction
• models of Coulomb-hadronic interference

Elegent package

The package consists of the following components.

1. C++ implementation of the models described above. For more details, please refer to the API description.
2. A program (ElegentDistributionSampler) to build a number of distributions of interest (differential and cumulative cross-sections, etc.) at a given collision energy. The output is a ROOT file called *datasheet* (certain datasheets of interest are available for direct ​download).
3. A class (Generator) that loads a specified cumulative distribution function from a datasheet and generates random events in the HepMC format. This class can easily embedded in any program. As an example, you can have a look at the TestElegent program.

• model implementation

API of hadronic models: inheriting Model; methods Amp and Prf

API of coulomb:

Users' guide

Download and compilation

Either download an ​Elegent release or checkout the code from Subversion:

svn co svn+ssh://svn.hepforge.org/hepforge/svn/elegent/trunk

Edit the makefile such that ROOTDIR and HepMCDIR point to your ROOT and HepMC installations.

Run make.

Generation of datasheets

NB: you might want to skip this step as there are ready-made datasheets available for ​download.

bin/ElegentDistributionSampler

• datasheet structure, ROOT file, 2 types of sampling

Testing the event generator

bin/ElegentTest <file name> <model path> <t_min> <t_max> <number of events>