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arXiv · hep-ph/9707431

CP-odd interaction of axion with matter

Maxim Pospelov
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Abstract

In the world with axion the precise measurement of gravitational force and check of the equivalence principle at small distances, $λ\sim 1cm$ and less, could provide an additional test of CP symmetry. Using the chiral approach, we connect the strength of CP-odd axion-nucleon vertex with CP-odd pion-nucleon coupling for color electric dipole moments of quarks as a low energy source of CP violation. Strong limits on CP-odd coupling $g_{πNN}$ coming from atomic electric dipole moments show that gravitational experiments are six orders of magnitude away from the sensitivity level needed to detect axion-mediated forces.

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Maxim Pospelov. 1997-07-23. CP-odd interaction of axion with matter. https://doi.org/10.1103/physrevd.58.097703

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