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

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

1999-04-28

arxiv.org/abs/hep-ph/9904483v3

Phys.Rev.Lett.83:2526-2529,1999

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, RevTeX: v2: typos corrected; v3: missing overall factor of two reinstated

Scientific paper

10.1103/PhysRevLett.83.2526

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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