Abstract
Current algebra for CP violating strong interactions is investigated. In particular, the neutron electric dipole moment D n is shown to behave as θm π 21n m π 2 for small pion mass m π and CP violating parameter θ. This logarithm is explicitly calculable: it contributes 5.2×10 −16θ cm to D n. This result is somewhat larger than a previous O( m π 2) estimate based on the bag model.
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