CompHEP - a package for evaluation of Feynman diagrams and integration over multi-particle phase space. User's manual for version 33

TL;DR

CompHEP is an automated software package designed to facilitate the calculation of Feynman diagrams and phase space integrations for elementary particle processes at tree level, streamlining the transition from theoretical models to observable predictions.

Contribution

This paper introduces CompHEP version 33, a user-friendly tool that automates the calculation of particle decay and collision properties in the lowest order of perturbation theory.

Findings

Automates Feynman diagram calculations and phase space integrations.

Enables efficient transition from Lagrangian to observable distributions.

Supports calculations at tree approximation for elementary particles.

Abstract

CompHEP is a package for automatic calculations of elementary particle decay and collision properties in the lowest order of perturbation theory (the tree approximation). The main idea prescribed into the CompHEP is to make available passing on from the Lagrangian to the final distributions effectively with a high level of automation.