Modern Particle Physics Event Generation with WHIZARD

TL;DR

WHIZARD is a versatile Monte-Carlo event generator designed for high-energy particle physics, supporting SM, BSM, and QCD physics, with recent improvements in code structure and plans for higher-order corrections and enhanced physics modeling.

Contribution

The paper introduces a new object-oriented version of WHIZARD, improving its maintainability and flexibility for simulating collider environments and exploring new physics.

Findings

Enhanced simulation accuracy for collider environments

Implementation of object-oriented code structure

Ongoing development of higher-order corrections

Abstract

We describe the multi-purpose Monte-Carlo event generator WHIZARD for the simulation of high-energy particle physics experiments. Besides the presentation of the general features of the program like SM physics, BSM physics, and QCD effects, special emphasis will be given to the support of the most accurate simulation of the collider environments at hadron colliders and especially at future linear lepton colliders. On the more technical side, the very recent code refactoring towards a completely object-oriented software package to improve maintainability, flexibility and code development will be discussed. Finally, we present ongoing work and future plans regarding higher-order corrections, more general model support including the setup to search for new physics in vector boson scattering at the LHC, as well as several lines of performance improvements.