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Related papers: EtabFDC: an $\eta_b$ event generator in hadroprodu…

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We present the latest developments of the MadGraph/MadEvent Monte Carlo event generator and several applications to hadron collider physics. In the current version events at the parton, hadron and detector level can be generated directly…

High Energy Physics - Phenomenology · Physics 2014-11-18 Johan Alwall , Pavel Demin , Simon de Visscher , Rikkert Frederix , Michel Herquet , Fabio Maltoni , Tilman Plehn , David L. Rainwater , Tim Stelzer

In this paper we investigate the $\eta_c$ production by photon - photon and photon - hadron interactions in $pp$ and $pA$ collisions at the LHC energies. The inclusive and diffractive contributions for the $\eta_c$ photoproduction are…

High Energy Physics - Phenomenology · Physics 2018-05-16 V. P. Goncalves , B. D. Moreira

We present the results of our analysis on charmonia ($J/\psi$ and $\psi'$) hadroproduction taking into account higher-order QCD effects induced by initial-state radiation in a Monte Carlo framework, with the colour-octet mechanism…

High Energy Physics - Phenomenology · Physics 2009-10-30 Miguel A. Sanchis-Lozano , Beatriz Cano-Coloma

Hadron production is investigated in proton-proton (pp) collisions at \surds = 7 TeV LHC energy - especially outside the cones of identified jets. We improved the original CDF definition of underlying event and introduce surrounding…

High Energy Physics - Phenomenology · Physics 2011-09-06 A. G. Agócs , G. G. Barnaföldi , P. Lévai

Event generators simulate particle interactions using Monte Carlo techniques, providing the primary connection between experiment and theory in experimental high energy physics. These software packages, which are the first step in the…

We present an event generator for the simulation of central exclusive processes in hadron-hadron reactions. Among others, it implements the two-photon production of lepton pairs previously introduced in LPAIR. As a proof of principle, we…

High Energy Physics - Phenomenology · Physics 2021-11-22 Laurent Forthomme

We present a Monte Carlo event generator specifically developed for the study of hadronic two-photon fusion events in two-photon scattering at electron-positron colliders. The code enables the generation of events with exact leading-order…

High Energy Physics - Phenomenology · Physics 2025-11-18 Max Lellmann , Igor Danilkin , Achim Denig , Jan Muskalla , Christoph F. Redmer , Xiu-Lei Ren , Marc Vanderhaeghen

New sets of parameters ("tunes") for the underlying-event (UE) modeling of the PYTHIA8, PYTHIA6 and HERWIG++ Monte Carlo event generators are constructed using different parton distribution functions. Combined fits to CMS UE proton-proton…

High Energy Physics - Experiment · Physics 2016-03-21 CMS Collaboration

We analyze Tevatron data of bottomonium hadroproduction in the framework of the colour-octet model (COM) implemented in the event generator PYTHIA using CTEQ4L PDF taking into account initial-state radiation of gluons and Altarelli-Parisi…

High Energy Physics - Phenomenology · Physics 2014-11-17 J. L. Domenech Garret , M. A. Sanchis-Lozano

Monte Carlo Event Generators are tools for simulating outcomes of high-energy collisions and particle production in High Energy Physics (HEP), such as those conducted at the Large Hadron Collider (LHC). Two of the most widely used…

High Energy Physics - Experiment · Physics 2025-11-05 Saliha Bashir , Agnieszka Obłąkowska-Mucha , Gloria Corti

Event generators like Pythia play an important role in physics studies at the Large Hadron Collider (LHC). While they make accurate predictions in the central region, i.e. at pseudorapidities $\eta<5$, a disagreement between Pythia and…

High Energy Physics - Phenomenology · Physics 2023-09-18 Max Fieg , Felix Kling , Holger Schulz , Torbjörn Sjöstrand

We have developed an event generator, named GR@PPA_4b, for the four bottom quark (b bbar b bbar) production processes at PP and PPbar collisions. The program implements all of the possible processes at the tree level within the framework of…

High Energy Physics - Phenomenology · Physics 2011-03-23 S. Tsuno , K. Sato , J. Fujimoto , T. Ishikawa , Y. Kurihara , S. Odaka , Y. Takaiwa , T. Abe

Physics and programming aspects are discussed for a Fortran 77 Monte Carlo program to simulate complete events in deep inelastic lepton-nucleon scattering. The parton level interaction is based on the standard model electroweak cross…

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

This paper is a long write-up of ERATO. ERATO is a Monte Carlo event generator describing four fermion production at LEP2 and beyond. All tree-order processes leading to four fermions are included, taking into account all relevant QCD…

High Energy Physics - Phenomenology · Physics 2009-10-28 Costas G. Papadopoulos

General-purpose Monte Carlo event generators have become important tools in particle physics, allowing the simulation of exclusive hadronic final states. In this article we examine the Pythia 8 generator, in particular focusing on its…

High Energy Physics - Phenomenology · Physics 2011-03-18 Richard Corke , Torbjörn Sjöstrand

Jet cross sections can be in principle compared to simple pQCD calculations, based on the hypothesis of factorization. But often it is useful or even necessary to not only compute the production rate of the very high pt jets, but in…

High Energy Physics - Phenomenology · Physics 2010-06-16 S. Porteboeuf , T. Pierog , K. Werner

The event generator Sibyll can be used for the simulation of hadronic multiparticle production up to the highest cosmic ray energies. It is optimized for providing an economic description of those aspects of the expected hadronic final…

High Energy Physics - Phenomenology · Physics 2015-10-05 Felix Riehn , Ralph Engel , Anatoli Fedynitch , Thomas K. Gaisser , Todor Stanev

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

ExDiff2.0 is a Monte Carlo event generator for simulation of Exclusive Diffractive processes in proton-proton collisions. The present version includes reactions: elastic scattering $pp\to pp$ at 7, 8, 13, 14~TeV; $pp\to p+R+p$, $R =…

High Energy Physics - Phenomenology · Physics 2018-05-23 R. A. Ryutin