The extraction of neutrino mixing parameters from accelerator-based oscillation experiments relies on proper modeling neutrino-nucleus scattering processes using neutrino-interaction event generators. Experimental tests these generators are difficult due to the broad range energies produced in beams and low statistics current experiments. Here we overcome difficulties by exploiting similarity e...

We present a new machine learning-based Monte Carlo event generator using generative adversarial networks (GANs) that can be trained with calibrated detector simulations to construct vertex-level free of theoretical assumptions about femtometer scale physics. Our framework includes GAN-based folding as fast-surrogate model mimics simulators. The is tested and validated on simulated inclusive de...

monte carlo simulation is widely used in calculations involing transport of photons through different materials of different shapes. the method consists of randomly generating a finite set of photon histories over which the quantities of interest are averaged. in photon transport calculations, sampling the photon scattering angle from the klein-nishina probability distribution is of special imp...

A fast and simple Monte Carlo program is presented that simulates single Bremsstrahlung in Bhabha scattering, ee → eeγ, without constraints on scattering angles. This allows the study of this process at arbitrarily small, or even vanishing, scattering angles. Experimental cuts can be imposed on an event-by-event basis, allowing for detailed studies of the process as a limitation to beam lifetim...

KATIE is a parton-level event generator for hadron scattering processes that can deal with partonic initial-state momenta with an explicit transverse momentum dependence causing them to be space-like. Provided with the necessary transverse momentum dependent parton density functions, it calculates the tree-level off-shell matrix elements and performs the phase space importance sampling to produ...

In the case of the gluon-fusion process in deep-inelastic leptoproduction, I explicitly show how to incorporate NLO corrections in a Monte-Carlo event generator by a subtraction method. I calculate the parton densities to be used by the event generator in terms of MS densities. The method is generalizable. A particular motivation for treating the gluon-fusion process is to treat diffractive dee...

We discuss recent work on methods for incorporating nonleading QCD corrections in parton shower algorithms. Parton shower Monte Carlo event generators are the main practical tool to describe multi-particle final states in high energy collisions. These event generators couple a leading-order (LO) hard scattering to a showering, treated basically in the leading logarithm approximation. Many nonle...