Missions

The post-doctoral researcher will be part of the IJCLab ATLAS team, working on data analysis activities at the LHC in the field of vector boson scattering.
IJCLab's ATLAS team, comprising around twenty researchers, post-docs and PhD students, has been involved in the ATLAS experiment since its inception, making major contributions to the detectors, reconstruction performance and physics analyses. It is involved in the upgrade projects for ATLAS Phase II: on the electromagnetic calorimeter readout electronics, on the new internal trajectometer (ITK), and on the high granularity timing detector (HGTD). Its expertise in physics analysis focuses on the study of the Higgs boson (in particular through the search for double-Higgs phenomena) and the understanding of electroweak physics through the study of vector boson scattering processes.
As part of a small group including PhD students and a post-doc, the post-doc will play a leading role in the development of new analyses for the study of vector boson scattering (VBS) processes with LHC Run 3 data, optimized for the search for new physics via effective field theories. As part of a collaboration with theorists on an ANR project, work may be carried out on improving the reusability of results, by publishing simplified likelihoods or studying the relationship between VBS EFT constraints and the SMEFT model. Depending on the candidate's preferences, involvement in studies of the combined performance of the ATLAS reconstruction or in the development of detectors for the HL-LHC is also possible.

Activités

The post-doctoral fellow will contribute to several aspects of particle physics research :
- Data analysis
- Taking the lead of a small working group
- Detector development
It is expected that the research work will be presented regularly in the corresponding working groups. The work will be shown at conferences and will be subject to publications.

Compétences

The successful candidate is expected to :
- Hold a recent PhD in particle physics, ideally with experience in collider physics.
- Experience in C++/python software development for simulations and data analysis.
- Proven capacity in working in decentralized teams
- Capacity to work in an English-speaking environment.
- Ability to present results in English, buth orally and in publications.

Contexte de travail

The Irène Joliot-Curie Physics Laboratory of 2 Infinities (IJCLab) is a UMR under the supervision of the CNRS (IN2P3), the University of Paris-Saclay and the University of Paris is located on the campus of the University of Paris -Saclay in Orsay. The laboratory is located on the campus of the Université Paris-Sud, Université Paris-Saclay in Orsay. The campus is located 20 km south of Paris and easily accessible by RER in 35 minutes.

IJCLab was born in 2020 from the merger of five units (CSNSM, IMNC, IPN, LAL, LPT). The staff is made up of nearly 560 permanent (340 engineers, technicians and administrators and 220 researchers and teacher-researchers) and approximately 200 non-permanent including 120 doctoral students. The research themes of the laboratory are nuclear physics, high energy physics, theoretical physics, astroparticles, astrophysics and cosmology, particle accelerators, energy and the environment and health. IJCLab has very significant technical capacities (around 280 IT) in all the major fields required to design, develop / implement the experimental devices necessary for its scientific activity, as well as the design, development and use of instruments.
The ATLAS team is a core member of the lab, inside the High Energy Physics pole. It therefore takes full advantage of the technical and human skills of the lab to carry over its research projects.
IJCLab bases its recruitment policy on the promotion of equality, diversity and inclusion. Essential values, they allow the professional development of agents, who are real actors in a collective success, but also the development of the laboratory itself.

Le poste se situe dans un secteur relevant de la protection du potentiel scientifique et technique (PPST), et nécessite donc, conformément à la réglementation, que votre arrivée soit autorisée par l'autorité compétente du MESR.

Contraintes et risques

Short periods of travel in other research labs in France and abroad (in particular at CERN – Switzerland) are expected for this position.