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A new implementation of the POWHEG method into the Monte-Carlo event generator Sherpa is presented, focusing on processes with a simple colour structure. Results for a variety of processes, namely e+e- to hadrons, deep-inelastic…

High Energy Physics - Phenomenology · Physics 2011-05-18 Stefan Hoeche , Frank Krauss , Marek Schonherr , Frank Siegert

We introduce a twiki page with collections of generated Monte Carlo event samples in proton-proton collisions at LHC energies including a heavy quark-antiquark pair in the final state. These samples are generated with the POWHEG method and…

High Energy Physics - Phenomenology · Physics 2011-11-08 M. V. Garzelli , Adam Kardos , Zoltán Trócsányi

Many extensions of the Standard Model predict the existence of charged Higgs bosons. In order to be able to find those particles, an accurate description of their production is needed. In Monte Carlo simulations of charged Higgs boson…

High Energy Physics - Phenomenology · Physics 2007-05-23 Johan Alwall

We present version 2.1 of the High Energy Jets (HEJ) event generator for hadron colliders. HEJ is a Monte Carlo generator for processes at high energies with multiple well-separated jets in the final state. To achieve accurate predictions,…

High Energy Physics - Phenomenology · Physics 2022-06-01 Jeppe R. Andersen , James Black , Helen Brooks , Bertrand Ducloué , Marian Heil , Andreas Maier , Jennifer M. Smillie

The search for the Higgs boson(s) is one of the major priorities at the upgraded Fermilab Tevatron and at the CERN Large Hadron Collider (LHC). Monte Carlo event generators (MCs) are heavily utilized to extract and interpret the Higgs…

High Energy Physics - Phenomenology · Physics 2009-10-31 C. Balazs , J. Huston , I. Puljak

Recently the collider physics community has seen significant advances in the formalisms and implementations of event generators. This review is a primer of the methods commonly used for the simulation of high energy physics events at…

We study a phenomenological ansatz for merging next-to-next-to-leading order (NNLO) calculations with Monte Carlo event generators. We reweight them to match bin-integrated NNLO differential distributions. To test this procedure, we study…

High Energy Physics - Phenomenology · Physics 2009-11-11 Giovanna Davatz , Fabian Stoeckli , Charalampos Anastasiou , Guenther Dissertori , Michael Dittmar , Kirill Melnikov , Frank Petriello

Given the current landscape in experimental high-energy physics, these lectures are focused on applications of event generators for hadron colliders like the Tevatron and LHC. Section 2 contains a first overview of the physics picture and…

High Energy Physics - Phenomenology · Physics 2009-11-30 Torbjörn Sjöstrand

In this presentation, we describe the GoSam (Golem/Samurai) framework for the automated computation of multi-particle scattering amplitudes at the one-loop level. The amplitudes are generated analytically in terms of Feynman diagrams, and…

The hadronic production of a Higgs boson (H) in association with b jets will play an important role in investigating the Higgs-boson couplings to Standard Model particles during Run II of the CERN Large Hadron Collider, and could in…

High Energy Physics - Phenomenology · Physics 2016-02-03 Barbara Jager , Laura Reina , Doreen Wackeroth

In this article we present an event generator based on the Monte Carlo program Powheg in combination with the matrix-element generator Recola. We apply it to compute NLO electroweak corrections to same-sign W-boson scattering, which have…

High Energy Physics - Phenomenology · Physics 2020-02-19 Mauro Chiesa , Ansgar Denner , Jean-Nicolas Lang , Mathieu Pellen

We give a status report on new developments in the WHIZARD event generator, including NLO electroweak automation for $e^+e^-$ colliders, loop-induced processes, POWHEG matching, new features in the UFO interface and the current development…

We present a next-to-leading order calculation of Higgs boson production in vector-boson fusion processes interfaced to shower Monte Carlo programs, implemented according to the POWHEG method.

High Energy Physics - Phenomenology · Physics 2010-05-28 Paolo Nason , Carlo Oleari

This manual describes how to use the MatCHig code for matching the charged Higgs boson production processes gg->tbH+/- and gb->tH+/-. A negative term, correcting for the double-counting between these processes, is implemented as an external…

High Energy Physics - Phenomenology · Physics 2007-05-23 Johan Alwall

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

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

A detailed study of the di-boson Monte Carlo programs Pythia, MC@NLO and the program of Baur, Han and Ohnemus (BHO) is performed. None of these programs cover all aspects of di-boson production. The BHO code is used to produce event weights…

High Energy Physics - Phenomenology · Physics 2008-03-25 Gideon Bella

We present an investigation of the dependence of searches for boosted Higgs bosons using jet substructure on the perturbative and non-perturbative parameters of the Herwig++ Monte Carlo event generator. Values are presented for a new tune…

High Energy Physics - Phenomenology · Physics 2015-06-05 Peter Richardson , David Winn

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,…

High Energy Physics - Phenomenology · Physics 2014-10-17 J. Reuter , F. Bach , B. Chokoufe Nejad , W. Kilian , T. Ohl , M. Sekulla , C. Weiss

LUSIFER is a Monte Carlo event generator for all processes e+e-->6fermions, which is based on the multi-channel Monte Carlo integration technique and employs the full set of tree-level diagrams. External fermions are taken to be massless,…

High Energy Physics - Phenomenology · Physics 2010-04-05 Stefan Dittmaier , Markus Roth