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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…

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

We demonstrate phase-matched second-harmonic generation (SHG) from three-dimensional metamaterials consisting of stacked metasurfaces. To achieve phase matching, we utilize a novel mechanism based on phase engineering of the metasurfaces at…

We consider several issues related to the multidimensional integration using a network of heterogeneous computers. Based on these considerations, we develop a new general purpose scheme which can significantly reduce the time needed for…

Computational Physics · Physics 2009-10-30 S. Veseli

PHASE is a Monte Carlo event generator, under construction, for all Standard Model processes with six fermions in the final state at the LHC. It employs the full set of tree level Feynman diagrams, taking into account fermion masses for b…

High Energy Physics - Phenomenology · Physics 2011-01-27 E. Accomando , A. Ballestrero , E. Maina

We present a simple yet efficient algorithm for phase-space integration at hadron colliders. Individual mappings consist of a single t-channel combined with any number of s-channel decays, and are constructed using diagrammatic information.…

High Energy Physics - Phenomenology · Physics 2023-10-18 Enrico Bothmann , Taylor Childers , Walter Giele , Florian Herren , Stefan Hoeche , Joshua Isaacson , Max Knobbe , Rui Wang

Cascading stages of seeded free electron laser (FEL) is a promising way to produce fully coherent X-ray radiations. We study a new approach to produce coherent hard X-rays by cascading the recently proposed phase-merging enhanced harmonic…

Accelerator Physics · Physics 2016-09-21 Guanglei Wang , Weiqing Zhang , Xueming Yang , Chao Feng , Haixiao Deng

We introduce a new, fully massive, Monte Carlo program to compute all four-fermion processes in electron-positron collisions, including Higgs production. We outline our strategy for the matrix element evaluation, the phase space generation…

High Energy Physics - Phenomenology · Physics 2007-05-23 F. A. Berends , C. G. Papadopoulos , R. Pittau

This contribution describes some recent advances in the parallelization of the generation and processing of radio signals emitted by particle showers in CORSIKA 8. CORSIKA 8 is a Monte Carlo simulation framework for modeling ultra-high…

Instrumentation and Methods for Astrophysics · Physics 2023-09-08 A. Augusto Alves , Nikolaos Karastathis , Tim Huege

At very high energies scattering amplitudes in a spontaneously broken gauge theory into multi-particle final states are known to grow factorially with the number of particles produced. Using simple scalar field theory models with and…

High Energy Physics - Phenomenology · Physics 2015-07-22 Valentin V. Khoze

We describe the universal Monte-Carlo event generator WHIZARD. The program automatically computes complete tree-level matrix elements, integrates them over phase space, evaluates distributions of observables, and generates unweighted event…

High Energy Physics - Phenomenology · Physics 2011-11-16 Wolfgang Kilian , Thorsten Ohl , Jurgen Reuter

This paper describes a new algorithm for Monte Carlo integration, based on the Field Estimator for Arbitrary Spaces (FiEstAS). The algorithm is discussed in detail, and its performance is evaluated in the context of Bayesian analysis, with…

Astrophysics · Physics 2009-11-13 Yago Ascasibar

We present an efficient method for evaluating random phase errors in phase shifters within photonic integrated circuits, avoiding the computational cost of traditional Monte Carlo simulations. By modeling spatially correlated manufacturing…

Optics · Physics 2025-04-09 Zijian Zhang

GRAPE-Dilepton is a Monte Carlo event generator for dilepton production in ep collisions. The cross-section calculation is based on the exact matrix elements in the electroweak theory at tree level. The dilepton productions via $\gamma…

High Energy Physics - Phenomenology · Physics 2014-11-17 Tetsuo Abe

Graph partitioning, a well studied problem of parallel computing has many applications in diversified fields such as distributed computing, social network analysis, data mining and many other domains. In this paper, we introduce FGPGA, an…

Neural and Evolutionary Computing · Computer Science 2014-11-18 Md. Lisul Islam , Novia Nurain , Swakkhar Shatabda , M Sohel Rahman

We present an algorithm for unweighted event generation in the partonic process pp -> WZ (j) with leptonic decays at next-to-leading order in alpha_S. Monte Carlo programs for processes such as this frequently generate events with negative…

High Energy Physics - Phenomenology · Physics 2009-10-31 M. Dobbs , M. Lefebvre

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

Three-dimensional scene generation holds significant potential in gaming, film, and virtual reality. However, most existing methods adopt a single-step generation process, making it difficult to balance scene complexity with minimal user…

Computer Vision and Pattern Recognition · Computer Science 2025-11-03 Jiacheng Hong , Kunzhen Wu , Mingrui Yu , Yichao Gu , Shengze Xue , Shuangjiu Xiao , Deli Dong

We present a study on using Markov Chain Monte Carlo (MCMC) techniques to explore the high-dimensional and multi-modal phase space of scattering events at high-energy particle colliders. To this end, we combine the BAT.jl package that…

High Energy Physics - Phenomenology · Physics 2024-12-18 Salvatore La Cagnina , Cornelius Grunwald , Timo Janßen , Kevin Kröninger , Steffen Schumann