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arXiv · hep-ph/9903553

The Theta Term in QCD Sum Rules and the Electric Dipole Moment of the Vector Meson

M. Pospelov·A. Ritz
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Abstract

We demonstrate that the QCD sum rule method can be successfully applied to the calculation of CP-odd electromagnetic observables induced by a vacuum theta--angle. We implement the approach in calculating the electric dipole moment of the rho meson to ~30% precision, and find that the result can also be explicitly related to the vacuum topological susceptibility.

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M. Pospelov, A. Ritz. 1999-07-13. The Theta Term in QCD Sum Rules and the Electric Dipole Moment of the Vector Meson. https://doi.org/10.1016/s0550-3213(99)00399-5

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