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arxiv: hep-ph/9904483 · v3 · submitted 1999-04-28 · ✦ hep-ph

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Theta-Induced Electric Dipole Moment of the Neutron via QCD Sum Rules

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classification ✦ hep-ph
keywords dipoleelectricmomentneutronthetaapproachapproximatelybound
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Using the QCD sum rule approach, we calculate the electric dipole moment of the neutron induced by a vacuum theta--angle to approximately 40-50% precision, d_n = 2.4 x 10^{-16} \theta e.cm. Combined with the new experimental bound, this translates into the limit |\theta|< 3 x 10^{-10}.

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