The “Particles & Fundamental Interactions” pole is composed of 2 scientific teams that dedicate their research to the study of very high precision measurements, such as the dipole electric moment and neutron lifetime, the study of nuclear beta decay, the determination of the mass and nature of the neutrino, etc. These measurements are carried out in order to test the hypotheses of the Standard Model of Elementary Particles. The discovery of deviations from the predictions of this Model would signal the existence of new physics.