The theta term in QCD sum rules and the electric dipole moment of the vector meson

Maxim Pospelov; Adam Ritz

doi:10.1016/S0550-3213(99)00399-5

The theta term in QCD sum rules and the electric dipole moment of the vector meson

Maxim Pospelov, Adam Ritz

Physics and Astronomy (Twin Cities)

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17 Scopus citations

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 θ-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.

Original language	English (US)
Pages (from-to)	243-258
Number of pages	16
Journal	Nuclear Physics B
Volume	558
Issue number	1-2
DOIs	https://doi.org/10.1016/S0550-3213(99)00399-5
State	Published - Oct 4 1999

Bibliographical note

Funding Information:
We would like to thank M. Shifman and A. Vainshtein for many valuable discussions and comments. This work was supported in part by the Department of Energy under Grant No. DE-FG02-94ER40823.

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The theta term in QCD sum rules and the electric dipole moment of the vector meson

Abstract

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