Hunting for CP-violating axionlike particle interactions

The impact of axionlike particles (ALPs) on the search of permanent electric dipole moments (EDMs) of molecules, atoms, nuclei and nucleons is systematically investigated. Assuming the most general ALP effective field theory containing operators up to dimension-five, we evaluate the leading short-distance effects to the EDMs at two-loop order. The high sensitivity of EDMs to CP-violating ALP interactions is emphasized exploiting both the current and projected experimental sensitivities.

Automated summary

This study systematically investigates the impact of ALPs on the search for permanent EDMs of various particles. It emphasizes the high sensitivity of EDMs to CP-violating ALP interactions using both current and projected experimental sensitivities. The researchers evaluated the leading short-distance effects on EDMs at two-loop order by assuming the most general ALP effective field theory.