The logarithmic ultraviolet divergence in the θ-term induced by electroweak interactions in the Kobayashi-Maskawa model of CP violation, found by Ellis and Gaillard, is discussed. We relate it to the Jarlskog CP-odd invariant of the quark mass matrix. The divergence arises in 14th order in Higgs coupling as well as in 12th order plus 2nd order in U(1) gauge boson coupling.
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We are grateful to V.A. Miransky, M.E. Pospelov and P. Ramond for stimulating discussions. The work was supported in part by the Department of Energy under grant DOE-AC02-83ER40105 .