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The construction of differential cross sections as a function of excitation energy for systems with a collection of low- and high-lying intrinsic vibrational modes has been attempted in the past. A prescription is proposed that simplifies…

Nuclear Theory · Physics 2015-05-18 C. H. Dasso , E. G. Lanza , H. M. Sofia

One of the important goals of the proposed future $e^+e^-$ collider experiments is the search for dark matter particles using different experimental approaches. The most general search approach is based on the mono-photon signature, which…

High Energy Physics - Phenomenology · Physics 2020-08-26 J. Kalinowski , W. Kotlarski , P. Sopicki , A. F. Zarnecki

We present a Monte Carlo (MC) code we wrote to simulate the photospheric process and to study the photospheric spectrum above the peak energy. Our simulations were performed with a photon to electron ratio $N_{\gamma}/N_{e} = 10^{5}$, as…

High Energy Astrophysical Phenomena · Physics 2016-01-13 Rodolfo Santana , Patrick Crumley , Roberto A. Hernandez , Pawan Kumar

The class of six-fermion production processes at e+e- colliders comprises very interesting particle reactions, such as the production of top-quark pairs and of Higgs bosons in the intermediate Higgs mass range, the scattering of massive…

High Energy Physics - Phenomenology · Physics 2009-11-07 Stefan Dittmaier , Markus Roth

Monte Carlo simulations are an important tool in statistical physics, complex systems science, and many other fields. An increasing number of these simulations is run on parallel systems ranging from multicore desktop computers to…

Statistical Mechanics · Physics 2009-06-10 Stephan Mertens

In this article, we highlight physics improvements in the NuWro Monte Carlo event generator. The upcoming version of NuWro will incorporate the integration of the argon spectral function for quasi-elastic scattering, along with the…

High Energy Physics - Phenomenology · Physics 2025-01-23 Hemant Prasad , Jan T. Sobczyk , Artur M. Ankowski , J. Luis Bonilla , Rwik Dharmapal Banerjee , Krzysztof M. Graczyk , Beata E. Kowal

The quark spin effects are introduced for the first time in the string fragmentation routine of the Pythia 8 Monte Carlo event generator for the simulation of $e^+e^-$ annihilation to hadrons. To describe the spin effects the…

High Energy Physics - Phenomenology · Physics 2023-12-29 A. Kerbizi , L. Lönnblad , A. Martin

The implementation of QED initial-state radiative corrections in the process of four-fermion production at LEP200 and higher-energy e+e- colliders is discussed. Because of the presence of charged-current processes, this is a nontrivial…

High Energy Physics - Phenomenology · Physics 2009-10-28 F. A. Berends , R. Pittau , R. Kleiss

We present a novel Monte-Carlo implementation of the EKRT model, MC-EKRT, for computing partonic initial states in high-energy nuclear collisions. Our new MC-EKRT event generator is based on collinearly factorized, dynamically fluctuating…

High Energy Physics - Phenomenology · Physics 2024-06-26 Mikko Kuha , Jussi Auvinen , Kari J. Eskola , Henry Hirvonen , Yuuka Kanakubo , Harri Niemi

Recent progress in the calculation of radiative corrections and in Monte Carlo event generation, relevant for a future e+e- linear collider, is reviewed.

High Energy Physics - Phenomenology · Physics 2007-05-23 Stefan Dittmaier

Any Monte Carlo event generator in which only initial state radiation (ISR) is implemented, or ISR is simulated independently of the final state radiation (FSR), may feature too many photons with large transverse momenta, which deform the…

High Energy Physics - Phenomenology · Physics 2009-01-07 S. Jadach , W. Placzek , M. Skrzypek , B. F. L. Ward , Z. Was

Modern neutrino-nucleus cross section predictions need to incorporate sophisticated nuclear models to achieve greater predictive precision. However, the computational complexity of these advanced models often limits their practicality for…

High Energy Physics - Experiment · Physics 2025-05-19 Mathias El Baz , Federico Sánchez , Natalie Jachowicz , Kajetan Niewczas , Ashish Kumar Jha , Alexis Nikolakopoulos

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

After briefly reviewing past accomplishments of TRISTAN experiments in the field of inclusive two--photon reactions, I discuss open problems in the Monte Carlo simulation of such reactions. The main emphasis is on multiple scattering, i.e.…

High Energy Physics - Phenomenology · Physics 2007-05-23 Manuel Drees

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

We have shown theoretically that efficient multiple exciton generation (MEG) by a single photon can be observed in small nanocrystals (NCs). Our quantum simulations that include hundreds of thousands of exciton and multi-exciton states…

Mesoscale and Nanoscale Physics · Physics 2010-09-23 Wayne M. Witzel , Andrew Shabaev , C. Stephen Hellberg , Verne L. Jacobs , Alexander L. Efros

We present a next generation of multi-particle Monte Carlo (MC) Event generators for LHC and ILC for the MSSM, namely the three program packages Madgraph/MadEvent, WHiZard/O'Mega and Sherpa/Amegic++. The interesting but difficult…

High Energy Physics - Phenomenology · Physics 2014-11-18 J. Reuter , K. Hagiwara , W. Kilian , F. Krauss , T. Ohl , T. Plehn , D. Rainwater , S. Schumann

Single- and multi-photon events with missing energy are selected in 619/pb of data collected by the L3 detector at LEP at centre-of-mass energies between 189GeV and 209GeV. The cross sections of the process e^+e^- -> nu nu gamma (gamma) are…

High Energy Physics - Experiment · Physics 2012-08-27 L3 Collaboration

In addition to being interesting in itself, the photon-photon interactions will be an inevitable background for the future electron-positron colliders. Thus to be able to quantify the potential of future electron-positron colliders it is…

High Energy Physics - Phenomenology · Physics 2015-10-21 Ilkka Helenius

We discuss the first applications of our newly developed Monte Carlo event generator SOPHIA to multiparticle photoproduction of relativistic protons with thermal and power law radiation fields. The measured total cross section is reproduced…

Astrophysics · Physics 2015-06-24 A. Muecke , J. P. Rachen , R. Engel , R. J. Protheroe , T. Stanev
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