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In this article, we highlight physics improvements in the NuWro Monte Carlo event generator. The upcoming version of NuWro will incorporate the integration of the argon spectral function for quasi-elastic scattering, along with the…

High Energy Physics - Phenomenology · Physics 2025-01-23 Hemant Prasad , Jan T. Sobczyk , Artur M. Ankowski , J. Luis Bonilla , Rwik Dharmapal Banerjee , Krzysztof M. Graczyk , Beata E. Kowal

This contribution lists challenges of Monte Carlo event generators for future lepton, especially linear colliders. A lot of the recent development benefits from the achievements at the Large Hadron Collider (LHC), but several aspects are…

High Energy Physics - Phenomenology · Physics 2024-12-19 Jürgen Reuter

A major new release of the Monte Carlo event generator Herwig++ (version 3.0) is now available. This release marks the end of distinguishing Herwig++ and HERWIG development and therefore constitutes the first major release of version 7 of…

Results from the new Monte Carlo event generator Herwig++ are presented. This first version simulates Hadron Emission Reactions With Interfering Gluons in electron-positron annihilation. The parton shower evolution is carried out using new…

High Energy Physics - Phenomenology · Physics 2009-11-10 Stefan Gieseke , Alberto Ribon , Michael H Seymour , Philip Stephens , Bryan Webber

Data analyses in hadron collider physics depend on background simulations performed by Monte Carlo (MC) event generators. However, calculational limitations and non-perturbative effects require approximate models with adjustable parameters.…

High Energy Physics - Phenomenology · Physics 2011-04-20 Andy Buckley , Hendrik Hoeth , Heiko Lacker , Holger Schulz , Jan Eike von Seggern

A new Monte Carlo program for photohadronic interactions of relativistic nucleons with an ambient photon radiation field is presented. The event generator is designed to fulfil typical astrophysical requirements, but can also be used for…

Astrophysics · Physics 2011-05-05 A. Muecke , Ralph Engel , J. P. Rachen , R. J. Protheroe , Todor Stanev

A summary of recent developments in the simulation of top quark production and decay in the Herwig Monte Carlo event generator.

High Energy Physics - Phenomenology · Physics 2018-01-19 Johannes Bellm , Kyle Cormier , Stefan Gieseke , Simon Plätzer , Christian Reuschle , Peter Richardson , Stephen Webster

In this contribution we describe the new model of multiple partonic interactions (MPI) that has been implemented in Herwig++. Tuning its two free parameters is enough to find a good description of CDF underlying event data. We show…

High Energy Physics - Phenomenology · Physics 2008-09-17 Manuel Bähr , Stefan Gieseke , Michael H. Seymour

HEP event generators aim to describe high-energy collisions in full exclusive detail. They combine perturbative matrix elements and parton showers with dynamical models of less well-understood phenomena such as hadronization, diffraction,…

High Energy Physics - Phenomenology · Physics 2014-12-12 Peter Skands

We describe the recent developments to extend the multi-parton interaction model of underlying events in Herwig++ into the soft, non-perturbative, regime. This allows the program to describe also minimum bias collisions in which there is no…

High Energy Physics - Phenomenology · Physics 2009-05-29 Manuel Bahr , Jonathan M. Butterworth , Stefan Gieseke , Michael H. Seymour

A new release of the Monte Carlo event generator Herwig++ (version 2.6) is now available. This version comes with a number of improvements including: a new structure for the implementation of next-to-leading order matrix elements; an…

High Energy Physics - Phenomenology · Physics 2012-05-23 K. Arnold , L. d'Errico , S. Gieseke , D. Grellscheid , K. Hamilton , A. Papaefstathiou , S. Platzer , P. Richardson , C. Rohr , A. Schofield , A. Siodmok , M. Stoll , D. Winn

I review the status of the general-purpose Monte Carlo event generators for the LHC, with emphasis on areas of recent physics developments. There has been great progress, especially in multi-jet simulation, but I mention some question marks…

High Energy Physics - Phenomenology · Physics 2010-08-18 Michael H. Seymour

In this paper we describe Herwig++ version 2.3, a general-purpose Monte Carlo event generator for the simulation of hard lepton-lepton, lepton-hadron and hadron-hadron collisions. A number of important hard scattering processes are…

High Energy Physics - Phenomenology · Physics 2009-09-29 M. Bahr , S. Gieseke , M. A. Gigg , D. Grellscheid , K. Hamilton , O. Latunde-Dada , S. Platzer , P. Richardson , M. H. Seymour , A. Sherstnev , J. Tully , B. R. Webber

HERWIG is a general-purpose Monte Carlo event generator, which includes the simulation of hard lepton-lepton, lepton-hadron and hadron-hadron scattering and soft hadron-hadron collisions in one package. It uses the parton-shower approach…

High Energy Physics - Phenomenology · Physics 2011-06-15 G. Corcella , I. G. Knowles , G. Marchesini , S. Moretti , K. Odagiri , P. Richardson , M. H. Seymour , B. R. Webber

A model for soft and diffractive scattering is presented which is incorporated seamlessly into the pre-existing MPI model in the Monte Carlo Event Generator Herwig. With the improved model we are able to describe general aspects of Minimum…

High Energy Physics - Phenomenology · Physics 2017-10-31 Stefan Gieseke , Patrick Kirchgaeßer , Frasher Loshaj

The Monte Carlo program {\tt WWGENPV}, designed for computing distributions and generating events for four-fermion production in $e^+ e^- $ collisions, is described. The new version, 2.0, includes the full set of the electroweak (EW)…

High Energy Physics - Phenomenology · Physics 2009-10-28 D. G. Charlton , G. Montagna , O. Nicrosini , F. Piccinini

We review the physics basis, main features and use of general-purpose Monte Carlo event generators for the simulation of proton-proton collisions at the Large Hadron Collider. Topics included are: the generation of hard-scattering matrix…

In recent years a number of new theoretical models have been implemented into Monte-Carlo neutrino interaction event generators. Being able to compare multiple model predictions is invaluable to the field, especially as it is unfortunately…

High Energy Physics - Experiment · Physics 2016-11-11 P. Stowell , S. Cartwright , L. Pickering , C. Wret , C. Wilkinson

We present an extension to the colour reconnection model in the Monte-Carlo event generator Herwig to account for the production of baryons and compare it to a series of observables for soft physics. The new model is able to improve the…

High Energy Physics - Phenomenology · Physics 2018-03-05 Stefan Gieseke , Patrick Kirchgaeßer , Simon Plätzer

The LHC physics programme involves a vast amount of Monte Carlo event simulation. This paper reviews current efforts towards sharing the generated events as Open Data. Open Event Generation helps reduce duplication of effort and resource…