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

Preprint

14 July 1999

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.hep-ph/9903553

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.

Keywords

ELECTRIC DIPOLE MOMENT
QCD SUM RULE
THETA TERM
SUM RULES
VACUUM
MESON

All Related Versions

Version 1, 1999-04-01, ArXiv
Version 2, 1999-07-14, ArXiv
Published version: Nuclear Physics B, 558 (1-2), 243.

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