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Postdoc on ATLAS on Di-Higgs, Top and EFT

LPC, Clermont-Ferrand
Geneva, Switzerland
Closing date
17 Feb 2024

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The LPC Clermont-Ferrand is recruiting a researcher for a two-year postdoctoral fellowship on ATLAS, as part of the ANR EFTatLHC. The proposed research will focus mainly on Higgs boson physics, but also on Top quark physics, and on EFT interpretations that can be performed coherently in both sectors. The experimental contribution on the Higgs will focus on the analysis of ATLAS data from Run 3 in the search for the simultaneous production of two Higgs bosons in association with a pair of top quarks. The production of ttHH is so rare that it will not be observable with Run 3 data, yet this process gives access to EFT operators difficult to constrain otherwise. This is why the development of EFTs interpretations will complement this analytical work, oriented in particular towards operators with different behavior with respect to charge-parity symmetry (CP-even / CP-odd), in particular via possbile collaborations with theorists. This work could then be coupled to a phenomenological study aimed at identifying generic effects of CP-even and CP-odd operators in the quark top sector, based on angular observables in ttbar events. Finally, these two projects (Higgs and Top) could be combined in a global approach to best constrain the CP-even or CP-odd nature of a possible phenomenon beyond the Standard Model, in particular affecting the third generation and the Higgs boson.

Other informations

  • Job location: Clermont-Ferrand (France), with possible travels to CERN (less than 3h30 by car)
  • Salary guide: from 2900€ gross per month depending on experience.
  • Requirements: a PhD in Particle Physics or related topic (defence must be before start date).
  • Contract length: 24 months.
  • Contract start: spring 2024


Applications must be sent via


Informal inquiries are welcome and encouraged: please contact Romain Madar ( to discuss the job and the projects.

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