APACIC++, A Parton Cascade in C++

TL;DR

APACIC++ is a new Monte Carlo event generator for simulating multijet events in high-energy electron-positron collisions, combining matrix elements with parton showers for improved accuracy.

Contribution

It introduces a novel matching scheme between matrix elements and parton showers in a C++ Monte Carlo generator for multijet event simulation.

Findings

APACIC++ shows good agreement with experimental data.

Compared to other generators, APACIC++ provides improved modeling of jet production.

The new matching ansatz enhances the simulation accuracy.

Abstract

In this talk the newly developped Monte-Carlo event generator {\tt APACIC++} suitable to describe multijet-events in high-energetic electron-positron annihilations is presented. A new ansatz to match the corresponding matrix elements for the production of jets via the strong and electroweak interactions to the subsequent parton shower modelling the inner-jet evolution is discussed in some detail. Results obtained with {\tt APACIC++} are compared to other QCD event generators and to some representative experimental data.