Olivier Mattelaer

Research scientist


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

+32 10 472010 (CP3)


UCL member card
CECI Formation
- ssh
- Object Oriented in C++
- Container on HPC with Singularity
- Checkpointing
- Code versioning

- Lecture
- Tutorial
Particle physics Review
Automated Computation of One-Loop Amplitudes
freely accessible from this link:

People responsibilities
Former members
Research directions:
Data analysis in HEP, astroparticle and GW experiments
Phenomenology of elementary particles
Theories of the fundamental interactions

Experiments and collaborations:

Active projects
Loop-induced processes in the SM and Beyond
Fabio Maltoni, Olivier Mattelaer

Automation within MadGraph5_aMC@NLO and phenomenological studies of loop-induced processes for the LHC
Fabio Maltoni, Olivier Mattelaer

Monte Carlo development.

External collaborators: Benjamin Fuks, Kentarou Mawatari, Kaoru Hagiwara, Tim Stelzer, Stefano Frixione, Marco Zaro, Rikkert Frederix, Valentin Hirschi, Paolo Torrielli, Johan Alwall, Hua-Sheng Shao, Mihailo Backovic,...

Non-active projects
Publications in IRMP
All my publications on Inspire

Number of publications as IRMP member: 38
Last 5 publications


IRMP-CP3-22-56: MadNIS -- Neural Multi-Channel Importance Sampling
Heimel, Theo and Winterhalder, Ramon and Butter, Anja and Isaacson, Joshua and Krause, Claudius and Maltoni, Fabio and Mattelaer, Olivier and Plehn, Tilman

[Abstract] [PDF]
Refereed paper. December 10.
IRMP-CP3-22-55: Renormalization group effects on SMEFT interpretations of LHC data
Rafael Aoude, Fabio Maltoni, Olivier Mattelaer, Claudio Severi, Eleni Vryonidou

[Abstract] [PDF]
Refereed paper. December 8.
IRMP-CP3-22-47: Testing the Scalar Triplet Solution to CDF's Fat W Problem at the LHC
Butterworth, Jon and Heeck, Julian and Jeon, Si Hyun and Mattelaer, Olivier and Ruiz, Richard

[Abstract] [PDF] [Journal] [Dial]
Refereed paper. October 13.
CP3-22-42: Improving Colour Computations in MadGraph5\_aMC@NLO and Exploring a 1/Nc Expansion
Lifson, Andrew and Mattelaer, Olivier

[Abstract] [PDF] [Journal] [Dial]
Refereed paper. September 1.
CP3-22-18: Machine Learning and LHC Event Generation
Butter, Anja and others

[Abstract] [PDF]
Contribution to Snowmass 2021
Contribution to proceedings. March 14.

More publications