Why are we made of matter and not antimatter?
New physics, beyond the Standard Model, was certainly at play in an hypothetical phase of the early Universe called baryogenesis.
Since this new physics must induce a violation of CP symmetry, it could be revealed in the laboratory by measuring a nonzero electric dipole moment of a spin 1/2 particle such as the neutron.
I will discuss the motivations to search for the neutron EDM, and report on the recent result
[C. Abel et al. PRL 124, 081803 (2020)] obtained after a decade of efforts by a collaboration of 16 labs including the LPSC.
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