Event generators for high-energy physics experiments
Authors: Campbell J. M. , Diefenthaler M. , Hobbs T. J. , Höche Stefan , Isaacson Joshua , Kling Felix , Mrenna Stephen , Reuter J. , Alioli S. , Andersen J. R. , Andreopoulos C. , Ankowski A. M. , Aschenauer Elke Caroline , Ashkenazi A. , Baker M. D. , Barrow Joshua L. , van Beekveld Melissa , Bewick Gavin , Bhattacharya S. , Bierlich Christian , Bothmann Enrico , Bredt P. , Broggio A. , Buckley Andy , Butter A. , Butterworth Jonathan Mark , Byrne E. P. , Carloni-Calame Carlo , Chakraborty Smita , Chen X. , Chiesa M. , Childers J. T. , Cruz-Martinez J. , Currie J. , Darvishi N. , Dasgupta M. , Denner A. , Dreyer F. A. , Dytman S. , El-Menoufi Basem Kamal , Engel Tim , Ferrario Ravasio Silvia , Figueroa Daniel , Flower L. , Forshaw J. R. , Frederix Rikkert , Friedland Alex , Frixione Stefano , Gallagher H. , Gallmeister K. , Gardiner Simon , Gauld Rhorry , Gaunt Jonathan , Gavardi A. , Gehrmann T. , Gehrmann-De Ridder Aude , Gellersen Leif , Giele Walter , Gieseke Stefan , Giuli Francesco , Glover E. W. N. , Grazzini Massimiliano , Grohsjean A. , Gütschow Christian , Hamilton Keith , Han T. , Hatcher R. , Heinrich G. , Helenius Ilkka , Hen O. , Hirschi Valentin , Höfer M. , Holguin J. , Huss Alexander , Ilten Philip , Jadach Stanislaw , Jentsch A. , Jones S. P. , Ju W. , Kallweit Stefan , Karlberg Alexander , Katori T. , Kerner Matthias , Kilian C. , Kirchgaeßer M. M. , Klein S. , Knobbe Max , Krause Claudius , Krauss Frank , Lang J. , Lang J.-N , Lee G. , Li S. W. , Lim M. A. , Lindert J. M. , Lombardi D. , Lönnblad Leif , Löschner M. , Lurkin N. , Ma Y. , Machado P. , Magerya Vitaly , Maier A. , Majer I. , Maltoni Fabio , Marcoli M. , Marinelli G. , Masouminia M. R. , Mastrolia Pierpaolo , Mattelaer Olivier , Mazzitelli J. , McFayden Josh , Medves Rok , Meinzinger P. , Mo J. , Monni Pier Francesco , Montagna Guido , Morgan T. , Mosel U. , Nachman Benjamin , Nadolsky Pavel , Nagar R. , Nagy Zoltan , Napoletano Davide , Nason Paolo , Neumann Tobias , Nevay L. J. , Nicrosini Oreste , Niehues J. , Niewczas K. , Ohl Thorsten , Ossola Giovanni , Pandey V. , Papadopoulou A. , Papaefstathiou Andreas , Paz Gil , Pellen Mathieu , Pelliccioli Giovanni , Peraro T. , Piccinini Fluvio , Pickering L. , Pires J. , Placzek Wieslaw , Plätzer Simon , Plehn Tilman , Pozzorini Stefano , Prestel Stefan , Preuss Christian Tobias , Price A. C. , Quackenbush Seth , Re Emanuele , Reichelt Daniel , Reina Laura , Reuschle Christian , Richardson Peter , Rocco M. , Rocco N. , Roda M. , Rodriguez Garcia A. , Roiser Stefan , Rojo Juan , Rottoli Luca , Salam Gavin P. , Schönherr Marek , Schuchmann S. , Schumann Steffen , Schürmann Robin , Scyboz Ludovic , Seymour Michael H. , Siegert Frank , Signer Adrian , Chahal Gurpreet Singh , Siódmok Andrzej , Sjöstrand Torbjörn , Skands Peter , Smillie Jennifer M. , Sobczyk J. T. , Soldin Dennis , Soper D. E. , Soto-Ontoso Alba , Soyez Gregory , Stagnitto Giovanni , Tena-Vidal J. , Tomalak O. , Tramontano Francesco , Trojanowski Sebastian , Tu Z. , Uccirati Sandro , Ullrich T. , Ulrich Yannick , Utheim Marius , Valassi A. , Verbytskyi Andrii , Verheyen Rob , Wagman M. , Walker D. , Webber B. R. , Weinstein L. , White O. , Whitehead James , Wiesemann Marius , Wilkinson C. , Williams C. , Winterhalder Ramon , Wret C. , Xie K. , Yang T.-Z. , Yazgan E. , Zanderighi Giulia , Zanoli S. , Zapp Korinna 
Published: May 2024

We provide an overview of the status of Monte-Carlo event generators for high-energy particle physics. Guided by the experimental needs and requirements, we highlight areas of active development, and opportunities for future improvements. Particular emphasis is given to physics models and algorithms that are employed across a variety of experiments. These common themes in event generator development lead to a more comprehensive understanding of physics at the highest energies and intensities, and allow models to be tested against a wealth of data that have been accumulated over the past decades. A cohesive approach to event generator development will allow these models to be further improved and systematic uncertainties to be reduced, directly contributing to future experimental success. Event generators are part of a much larger ecosystem of computational tools. They typically involve a number of unknown model parameters that must be tuned to experimental data, while maintaining the integrity of the underlying physics models. Making both these data, and the analyses with which they have been obtained accessible to future users is an essential aspect of open science and data preservation. It ensures the consistency of physics models across a variety of experiments.