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Some results obtained with the new Monte Carlo event generator Herwig++ are presented. In its first version (1.0), Herwig++ is capable of simulating e+e- Annihilation events. We discuss its relevance for future e+e- colliders and show…

High Energy Physics - Phenomenology · Physics 2007-05-23 Stefan Gieseke

A Monte Carlo simulator is presented to reproduce data of nucleus-nucleus interactions at high energies. The program is designed in a microscopic point of view, where the cascade approach is applied. Moreover, each nucleon from both the…

High Energy Physics - Phenomenology · Physics 2007-05-23 N. M. Hassan , N. El-Harby , M. T. Hussein

The HERWIG event generator was widely used throughout the workshop, particularly in the emulation of Supersymmetric and Higgs processes in the context of the Minimal Supersymmetric Standard Model. We briefly review here its main features in…

High Energy Physics - Phenomenology · Physics 2007-05-23 S. Moretti

A new release of the Monte Carlo program Herwig++ (version 2.3) is now available. This version includes a number of improvements including: the extension of the program to lepton-hadron collisions; the inclusion of several processes…

High Energy Physics - Phenomenology · Physics 2008-12-03 M. Bahr , S. Gieseke , M. Gigg , D. Grellscheid , K. Hamilton , S. Platzer , P. Richardson , M. H. Seymour , J. Tully

In this proceedings I discuss the general strategy and impact of tuning Monte-Carlo event generators for physics processes involving top quarks. Special emphasis is put on disinguishing the different usages of event generators in the…

High Energy Physics - Phenomenology · Physics 2019-01-16 Marek Schönherr

We describe a Monte Carlo event generator for the production and decay of first and second string resonances through 2 $\rightarrow$ 2 partonic and also 2-parton $\rightarrow$ $\gamma$-parton scatterings in proton-proton collisions -…

High Energy Physics - Phenomenology · Physics 2018-11-26 Pourya Vakilipourtakalou , Douglas M. Gingrich

Many of the basic ideas in multiparton interaction (MPI) phenomenology were first developed in the context of the PYTHIA event generator, and MPIs have been central in its modelling of both minimum-bias and underlying-event physics in one…

High Energy Physics - Phenomenology · Physics 2017-06-08 Torbjörn Sjöstrand

We study the colour connection structure of R-parity violating decays and production cross sections, and construct a Monte Carlo simulation of these processes including colour coherence effects. We then present some results from the…

High Energy Physics - Phenomenology · Physics 2009-10-31 Herbi Dreiner , Peter Richardson , Michael H. Seymour

We present a model for generating spacetime coordinates in the Monte Carlo event generator Herwig 7, and perform colour reconnection by minimizing a boost-invariant distance measure of the system. We compare the model to a series of soft…

High Energy Physics - Phenomenology · Physics 2019-12-20 Johannes Bellm , Cody B Duncan , Stefan Gieseke , Miroslav Myska , Andrzej Siódmok

Ultra-peripheral heavy-ion collisions (UPCs) provide a distinct environment for high-energy QCD research, focusing on the production of vector mesons. This proceeding details recent advancements in the Sar$t$re Monte Carlo event generator,…

High Energy Physics - Phenomenology · Physics 2025-11-18 Vaidehi Nattoja , Tobias Toll

The properties of quark and gluon jets, and the differences between them, are increasingly important at the LHC. However, Monte Carlo event generators are normally tuned to data from $e^+e^-$ collisions which are primarily sensitive to…

High Energy Physics - Phenomenology · Physics 2018-01-17 Daniel Reichelt , Peter Richardson , Andrzej Siodmok

At HERA, the large flux of almost real photons accompanying the electron beam leads to the copious photoproduction of jets. Regions of small momentum fractions $x$ of the incoming particles are explored, where the density of partons is…

High Energy Physics - Phenomenology · Physics 2008-11-26 J. M. Butterworth , J. R. Forshaw , T. Sjostrand , J. K. Storrow

We present the EpIC Monte Carlo event generator for exclusive processes sensitive to generalised parton distributions. EpIC utilises the PARTONS framework, which provides a flexible software architecture and a variety of modelling options…

High Energy Physics - Phenomenology · Physics 2022-09-28 E. C. Aschenauer , V. Batozskaya , S. Fazio , K. Gates , H. Moutarde , D. Sokhan , H. Spiesberger , P. Sznajder , K. Tezgin

NuWro Monte Carlo generator of events is presented. It is a numerical environment containing all necessary ingredients to simulate interactions of neutrinos with nucleons and nuclei in realistic experimental situation in wide neutrino…

High Energy Physics - Phenomenology · Physics 2016-01-20 Jakub Zmuda , Krzysztof M. Graczyk , Cezary Juszczak , Jan T. Sobczyk

Recently a two-Higgs-doublet model with maximal symmetry under generalised CP transformations, the MCPM, has been proposed. The theory features a unique fermion mass spectrum which, although not describing nature precisely, provides a good…

High Energy Physics - Phenomenology · Physics 2012-07-02 Johann Brehmer

We present results obtained with the new Monte Carlo event generator Herwig++. In its first version (1.0), Herwig++ is capable of simulating e+e- Annihilation events. We compare results for different distributions with a vast amount of…

High Energy Physics - Phenomenology · Physics 2007-05-23 Stefan Gieseke

In addition to being interesting in itself, the photon-photon interactions will be an inevitable background for the future electron-positron colliders. Thus to be able to quantify the potential of future electron-positron colliders it is…

High Energy Physics - Phenomenology · Physics 2015-10-21 Ilkka Helenius

The Pythia event generator is used in several contexts to study hadron and lepton interactions, notably $pp$ and $p\bar{p}$ collisions. In this article we extend the hadronic modelling to encompass the collision of a wide range of hadrons…

High Energy Physics - Phenomenology · Physics 2022-01-26 Torbjörn Sjöstrand , Marius Utheim

Three studies on six-fermion production processes are presented, in which the production of an intermediate-mass Higgs boson, the top-quark physics and the analysis of possible anomalous quartic gauge couplings are considered. A Monte Carlo…

High Energy Physics - Phenomenology · Physics 2007-05-23 F. Gangemi , G. Montagna , M. Moretti , O. Nicrosini , F. Piccinini

This paper presents a new set of parameters ("tunes") for the underlying-event model of the HERWIG 7 event generator. These parameters control the description of multiple-parton interactions (MPI) and colour reconnection in HERWIG 7, and…

High Energy Physics - Experiment · Physics 2021-04-15 CMS Collaboration
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