Sum rules for CP-violating operators of Weinberg type

  title={Sum rules for CP-violating operators of Weinberg type},
  author={U. Haisch and Amando Hala},
  journal={Journal of High Energy Physics},
  • U. Haisch, A. Hala
  • Published 19 September 2019
  • Physics
  • Journal of High Energy Physics
Abstract We estimate the size of the hadronic matrix elements of CP-violating three-gluon and four-gluon Weinberg operators using sum-rule techniques. In the three-gluon case, we are able to reproduce the expressions given in earlier works, while the four-gluon results obtained in this article are new. Our paper therefore represents the first systematic study of contributions to the electric dipole moment of the neutron due to CP-violating dimension-six and dimension-eight operators. We… Expand

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