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

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.

arXiv comment16 pages, RevTeX: a sign corrected and other minor changes, to appear in Nucl. Phys. B

References in corpus (5)

• A Supersymmetric Solution to CP Problems
• CP-odd interaction of axion with matter
• Dipole Moments of the Rho Meson
• Radiative corrections to theta term in the left-right supersymmetric models
• Magnetic quadrupole moment of $W$-boson in Kobayashi-Maskawa model

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