Phys. Rev. Lett. 78, 4339–4342 (1997)Neutron Electric Dipole Moment in the Standard Model: Complete Three-Loop Calculation of the Valence Quark ContributionsReceived 18 April 1997; published in the issue dated 9 June 1997 We present a complete three-loop calculation of the electric dipole moment of the u and d quarks in the standard model. For the d quark, more relevant for the experimentally important neutron electric dipole moment, we find cancellations which lead to an order of magnitude suppression compared with previous estimates. © 1997 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.78.4339
DOI:
10.1103/PhysRevLett.78.4339
PACS:
11.30.Er, 12.15.Ji, 13.40.Em
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