May 14 – 19, 2023
Europe/Zurich timezone

FIPs in the ALPs is the first edition of a foreseen series of schools  fully dedicated to the physics of feebly-interacting particles and aims to gathering together highly renowned experts from collider, beam dump, fixed target experiments, as well as from astroparticle, cosmology, axion/ALP, ultra-light particle searches, and dark matter direct and indirect detection communities along with a set of young and brilliant physicists to discuss progress in experimental searches and underlying theory models for FIP physics.

The school is organized by the FIP Physics Centre of the Physics Beyond Colliders study group at CERN:

The aim of the school is to embedding a new generation of physicists into the activities of the study group.

The School is organized along three main directions:

  1. MeV-GeV Dark Matter and its searches at accelerator, direct and indirect detection experiments;
  2. Heavy neutral leptons and their connection to active neutrino physics;
  3. Ultra-light (< 1 eV) FIPs in particle physics, astroparticle, and cosmology.

Advanced PhD students and PostDocs are strongly encouraged to apply.

The Organizers:

The FIP Physics Centre of the Physics Beyond Colliders at CERN.

Bus transportation:

Sunday 14.5: The Bus leaves from CERNat 4 pm, stops at Geneva airport between 4:30-5:00 pm, arrives at Les Houches at about 6:30 pm.

Friday 19.5: the bus leaves from Les Houches at 2 pm, stops at Geneva airport at 15:30-16:00. Leaves from Geneva airport at 16:30 and arrives at CERN at 16:45.


  • Marco Drewes, Mikhail Shaposhnikov: Heavy Neutral Leptons in particle physics and cosmology
  • Maxim Pospelov: FIPs in the early universe
  • Yevgeny Stadnik: Phenomenology of ultra-light FIPs
  • Joerg Jaeckel: ALPs in the FIPs
  • Stefania Gori: Phenomenology of MeV-GeV Dark Matter 
  • Felix Kahlhoefer: Astronomical constraints on FIPs
  • Gaia Lanfranchi: FIPs at extracted beam lines.


Videos of the Lectures:

Photos of the School:

Registration for this event is currently open.