Modern machine learning for LHC physicists

T Plehn, A Butter, B Dillon, T Heimel, C Krause… - arXiv preprint arXiv …, 2022 - arxiv.org
Modern machine learning is transforming particle physics fast, bullying its way into our
numerical tool box. For young researchers it is crucial to stay on top of this development …

Precision-machine learning for the matrix element method

T Heimel, N Huetsch, R Winterhalder, T Plehn… - SciPost Physics, 2024 - scipost.org
The matrix element method is the LHC inference method of choice for limited statistics. We
present a dedicated machine learning framework, based on efficient phase-space …

Fast and improved neutrino reconstruction in multineutrino final states with conditional normalizing flows

JA Raine, M Leigh, K Zoch, T Golling - Physical Review D, 2024 - APS
In this work we introduce ν 2-flows, an extension of the ν-flows method to final states
containing multiple neutrinos. The architecture can natively scale for all combinations of …

Unsupervised and lightly supervised learning in particle physics

J Bardhan, T Mandal, S Mitra, C Neeraj… - The European Physical …, 2024 - Springer
We review the main applications of machine learning models that are not fully supervised in
particle physics, ie, clustering, anomaly detection, detector simulation, and unfolding …

How to understand limitations of generative networks

R Das, L Favaro, T Heimel, C Krause, T Plehn, D Shih - SciPost Physics, 2024 - scipost.org
Well-trained classifiers and their complete weight distributions provide us with a well-
motivated and practicable method to test generative networks in particle physics. We …

The madnis reloaded

T Heimel, N Huetsch, F Maltoni, O Mattelaer, T Plehn… - SciPost Physics, 2024 - scipost.org
In pursuit of precise and fast theory predictions for the LHC, we present an implementation of
the MadNIS method in the MadGraph event generator. A series of improvements in MadNIS …

Jet Diffusion versus JetGPT--Modern Networks for the LHC

A Butter, N Huetsch, SP Schweitzer, T Plehn… - arXiv preprint arXiv …, 2023 - arxiv.org
We introduce two diffusion models and an autoregressive transformer for LHC physics
simulations. Bayesian versions allow us to control the networks and capture training …

Returning CP-observables to the frames they belong

J Ackerschott, RK Barman, D Gonçalves, T Heimel… - SciPost Physics, 2024 - scipost.org
Optimal kinematic observables are often defined in specific frames and then approximated
at the reconstruction level. We show how multi-dimensional unfolding methods allow us to …

Fitting a deep generative hadronization model

J Chan, X Ju, A Kania, B Nachman, V Sangli… - Journal of High Energy …, 2023 - Springer
A bstract Hadronization is a critical step in the simulation of high-energy particle and nuclear
physics experiments. As there is no first principles understanding of this process, physically …

Unbinned profiled unfolding

J Chan, B Nachman - Physical Review D, 2023 - APS
Unfolding is an important procedure in particle physics experiments that corrects for detector
effects and provides differential cross section measurements that can be used for a number …