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We classify the parity- and time-reversal-violating operators involving quarkand gluon fields that have effective dimension six: the quark electric dipolemoment, the quark and gluon chromo-electric dipole moments, and four four-quarkoperators. We construct the effective chiral Lagrangian with hadronic andelectromagnetic interactions that originate from them, which serves as thebasis for calculations of low-energy observables. The form of the effectiveinteractions depends on the chiral properties of these operators. We develop apower-counting scheme and calculate within this scheme, as an example, theparity- and time-reversal-violating pion-nucleon form factor. We also discussthe electric dipole moments of the nucleon and light nuclei.

The Effective Chiral Lagrangian From Dimension-Six Parity and Time-Reversal Violation