Missions

The Theory Pole of the IJCLab opens a call for a postdoctoral position application.
The fellowship is funded CNRS IN2P3 (Institut National de Physique Nucléaire et de Physique des Particules) for a duration of two years, starting in the Fall 2026.
The appointment is foreseen in the area of particle physics; applicants with expertise in Beyond the Standard Model (BSM) phenomenology, model building, and flavour physics (leptons & quarks) in the SM and beyond are invited to apply. At the starting date, applicants should already hold a Ph.D. and preferably have some postdoctoral experience (up to 3 years).

Activities

The successful candidate is expected to work on particle physics theory and phenomenology in the flavor sector, in connection with current experiments at Belle-II and LHCb, as well as various experiments in the lepton sector.

Skills

Expertise in BSM phenomenology, Effective Field Theories, and/or flavor and collider physics.
Fluent English, both written and spoken.
Collaborative work.
Programming skills (Mathematica).

Work Context

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 min.
IJCLab was created 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 researcher will work on the Flavor Physics team of the Theory pole of IJCLab, with possible transverse activities with the QCD and BSM groups.
IJCLAB bases its recruitment policy on the promotion of equality, diversity, and inclusion. These core values support the professional development of staff, who are key contributors to collective success, as well as the growth and development of the laboratory itself.

The position is located in a sector under the protection of scientific and technical potential (PPST), and therefore requires, in accordance with the regulations, that your arrival is authorized by the competent authority of the MESR.

Constraints and risks

Short periods of travel within France and abroad should be expected.

Additional Information

The application requires a short CV, a research statement (2 pages max) and a list of publications, in a single pdf file, which should be submitted via the CNRS portal. Applicants should also arrange for 2 or 3 (at most) letters of reference to be submitted, before 10/12/2025 to the address postdoc.th.ijclab.in2p3@gmail.com indicating in the subject line « Name-of-the-applicant-Postdoc TH-ANR 2026 ».
Closing date for the receipt of applications: 10/12/2025.