Contact
Name
Christopher Flett

Position
Postdoc

Email
christopher.flett@uclouvain.be

Address
Centre for Cosmology, Particle Physics and Phenomenology - CP3
Université catholique de Louvain
2, Chemin du Cyclotron - Box L7.01.05
B-1348 Louvain-la-Neuve
Belgium

Office
E.358

UCL member card
https://www.uclouvain.be/en/people/christopher.flett
Research statement
My research focuses on the theory and phenomenology of quarkonium bound-state production in pQCD. Currently, I am developing my frameworks for exclusive heavy-quarkonium photo- and electro-production to better understand gluon parton distribution functions in protons and nuclei. I am also implementing quarkonium cross sections in the well-known event generator MadGraph5_aMC@NLO with the aim to provide an efficient, all-encompassing tool that anyone can use to simulate quarkonium production at colliders. These activities will ultimately facilitate the first global NRQCD phenomenological analyses comparing theory and experiment, and enable sound physics-case constructions for current (LHC@CERN, Belle-II@KEK, RHIC@BNL,…) and future (EIC@BNL, FCC@CERN, …) experimental programs.
Projects
Research directions:
Particle Physics

Active projects
MadGraph suite of software
[link]
Luca Beccatini, Christopher Flett, Theo Heimel, Fabio Maltoni, Olivier Mattelaer

CP3 is coordinating and leading the development of the MadGraph suite of tools. Tools use for the simulation of High-Energy Physics collision.
This project includes:
- NLO computation
- MadNIS: Neural Importance Sampler (AI for the phase-space integration)
- HardWare: How to port the code on modern facility (GPU, quantum computer, ...)

External collaborators: Benjamin Fuks, Kentarou Mawatari, Kaoru Hagiwara, Tim Stelzer, Stefano Frixione, Marco Zaro, Rikkert Frederix, Valentin Hirschi, Paolo Torrielli, Hua-Sheng Shao, Richard Ruiz, Ramon Witherhalder, Tilman Plhen,...
Publications in IRMP
All my publications on Inspire

Number of publications as IRMP member: 2

2025

IRMP-CP3-25-43: Phenomenological studies of exclusive heavy-quarkonium electroproduction at NLO
Chris A. Flett

[Abstract] [PDF]
Refereed paper. December 4.
IRMP-CP3-25-37: Automated event generation for S-wave quarkonium and leptonium production in NRQCD and NRQED
Colpani Serri, Alice and Flett, Chris A. and Lansberg, Jean-Philippe and Mattelaer, Olivier and Shao, Hua-Sheng and Simon, Lukas

[Abstract] [PDF] [Local file]
68 pages, 7 figures, 15 tables
Submitted to JHEP
Refereed paper. November 7.