QCD@LHC2022

Session

Parallel B - WG2: 2

B

28 Nov 2022, 16:00

Auditorium Joliot Curie (Building 100)

33. Computing cross-sections beyond NLO accuracy with Local Unitarity

Zeno Capatti

28/11/2022, 16:00

WG2: Event Simulations and Monte Carlo Tools

Local Unitarity provides an order-by-order representation of perturbative cross-sections that realises at the local level the cancellation of final-state collinear and soft singularities predicted by the KLN theorem. The representation is obtained by manipulating the real and virtual interference diagrams contributing to transition probabilities using general local identities. As a...

146. Computational developments of SHERPA and LHAPDF

Max Knobbe (University of Göttingen)

28/11/2022, 16:20

WG2: Event Simulations and Monte Carlo Tools

High-precision calculations are an indispensable ingredient to the success of the LHC physics programme, yet their poor computing efficiency has been a growing cause for concern, threatening to become a paralysing bottleneck in the coming years. We present a set of solutions to reduce the Monte Carlo footprint, focusing on the current cost-driving components: the evaluation of...

156. Computational developments of Madgraph5_aMC@NLO on GPUs and vector CPUs

Andrea Valassi (CERN)

28/11/2022, 16:40

WG2: Event Simulations and Monte Carlo Tools

This presentation discusses the current status of the reengineering of the Madgraph5_aMC@NLO (MG5aMC) event generator to speed it up and port it to new architectures. The calculation of matrix elements (MEs), which constitutes the computationally intensive part and was previously handled by a scalar Fortran implementation on CPUs, is now offloaded to new implementations using event-level data...

179. Modeling hadronization with Machine Learning

Tony Menzo

28/11/2022, 17:00

WG2: Event Simulations and Monte Carlo Tools

We discuss the recent and ongoing developments with respect to the use of machine learning methods in modeling hadronization within event generators.