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A description and the use of an event-generator code for two-photon processes at e+e- colliders, TREPS, are presented. This program uses an equivalent photon approximation in which the virtuality of photons is taken into account. It is…

High Energy Physics - Phenomenology · Physics 2013-10-02 Sadaharu Uehara

This is the user's manual of MC@NLO 3.3. This package is a practical implementation, based upon the HERWIG event generator, of the MC@NLO formalism, which allows one to incorporate NLO QCD matrix elements consistently into a parton shower…

High Energy Physics - Phenomenology · Physics 2007-05-23 S. Frixione , B. R. Webber

We present a new Monte Carlo event generator for the production of a top-quark pair in association with a $W^\pm$ boson at hadron colliders in the POWHEG-BOX framework. We consider the next-to-leading-order QCD corrections to the $pp\to…

High Energy Physics - Phenomenology · Physics 2021-05-19 F. Febres Cordero , M. Kraus , L. Reina

This is the user's manual of MC@NLO 3.1. This package is a practical implementation, based upon the HERWIG event generator, of the MC@NLO formalism, which allows one to incorporate NLO QCD matrix elements consistently into a parton shower…

High Energy Physics - Phenomenology · Physics 2007-05-23 Stefano Frixione , Bryan R. Webber

The Monte Carlo generator {\sc Major} 1.5 simulates the production and decay of heavy Majorana neutrinos via lepton mixing or exchange of `light' right-handed $W$-bosons in deep inelastic scattering, i.e. $e^{\pm} p \rightarrow {N} X…

High Energy Physics - Phenomenology · Physics 2009-10-28 J. Rathsman , G. Ingelman

We present a fully differential calculation of lepton pair production, taking into account the dominant next-to-next-to-leading order QED corrections as well as next-to-leading order electroweak and polarisation effects. We include all…

High Energy Physics - Phenomenology · Physics 2023-10-19 Sophie Kollatzsch , Yannick Ulrich

Central production of lepton-lepton pairs ($e^+e^-$ and $\mu^+\mu^-$) and heavy quark composite states (charmonia and bottomonia) in diffractive proton collisions (proton momenta transferred ${|\bf q_\perp}|\sim m/\ln s$) are studied at…

High Energy Physics - Phenomenology · Physics 2014-12-04 V. V. Anisovich , M. A. Matveev , V. A. Nikonov , J. Nyiri

The Monte Carlo generator EKHARA allows to simulate the process (e+e- to e+e-pi0) at energies of meson factories. We review the motivation, describe the current status of the generator, and discuss features, which will appear in the…

High Energy Physics - Phenomenology · Physics 2015-06-04 Henryk Czyz , Sergiy Ivashyn

This article provides an introduction to the principles of particle physics event generators that are based on the Monte Carlo method. Following some preliminaries, instructions on how to build a basic parton-level Monte Carlo event…

High Energy Physics - Phenomenology · Physics 2020-07-16 Andreas Papaefstathiou

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

Next steps in development of the KrkNLO method of implementing NLO QCD corrections to hard processes in parton shower Monte Carlo programs are presented. This new method is a simpler alternative to other well-known approaches, such as…

High Energy Physics - Phenomenology · Physics 2016-08-10 S. Jadach , W. Placzek , S. Sapeta , A. Siodmok , M. Skrzypek

We study in the $k_T$ factorisation framework jet production at LHC energies. In particular we are interested in valence quark and gluon initiated jets. The calculation of the relevant hard matrix element is presented. A CCFM like…

High Energy Physics - Phenomenology · Physics 2008-07-16 Michal Deák , Hannes Jung , Krzysztof Kutak

The precise determination of the cross section for electron-positron annihilation into hadrons is one of the central tasks of ongoing experiments at low energy colliders. These measurements have to be complemented by Monte Carlo generators…

High Energy Physics - Phenomenology · Physics 2015-06-16 H. Czyz , M. Gunia , J. H Kuhn

Motivated by current searches for electroweak superpartners at the Large Hadron Collider, we present precision predictions for pair production of such particles in the framework of the Minimal Supersymmetric Standard Model. We make use of…

High Energy Physics - Phenomenology · Physics 2013-05-09 Benjamin Fuks , Michael Klasen , David R. Lamprea , Marcel Rothering

The most precise top quark mass measurements use kinematic reconstruction methods, determining the top mass parameter of a Monte Carlo event generator, $m_t^{\rm MC}$. Due to the complicated interplay of hadronization and parton shower…

High Energy Physics - Phenomenology · Physics 2018-03-07 Bahman Dehnadi , André H. Hoang , Vicent Mateu , Moritz Preisser , Iain W. Stewart

A modified version of the CKKW matrix element merging algorithm is presented, suitable for use in an angular-ordered parton shower, using truncated showers and forced splittings. The algorithm is implemented in the Herwig++ Monte Carlo…

High Energy Physics - Phenomenology · Physics 2009-11-13 Keith Hamilton , Peter Richardson , Jon Tully

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

The construction of a Monte Carlo generator for high energy hadronic and nuclear collisions is discussed in detail. Interactions are treated in the framework of the Reggeon Field Theory, taking into consideration enhanced Pomeron diagrams…

High Energy Physics - Phenomenology · Physics 2015-03-17 Sergey Ostapchenko

The production of four fermions plus a visible photon in electron-positron collisions is analyzed, with particular emphasis on the LEP2 energy range. The study is based on the calculation of exact matrix elements, including the effect of…

High Energy Physics - Phenomenology · Physics 2011-09-13 G. Montagna , M. Moretti , O. Nicrosini , M. Osmo , F. Piccinini

In recent years, the prospects of performing fundamental and applied studies at the next-generation high-intensity laser facilities have greatly stimulated the interest in performing large-scale simulations of laser interaction with matter…

Computational Physics · Physics 2020-10-19 V. Volokitin , S. Bastrakov , A. Bashinov , E. Efimenko , A. Muraviev , A. Gonoskov , I. Meyerov