The Effective Chiral Lagrangian From Dimension-Six Parity and Time-Reversal Violation
Abstract
We classify the parity- and time-reversal-violating operators involving quark and gluon fields that have effective dimension six: the quark electric dipole moment, the quark and gluon chromo-electric dipole moments, and four four-quark operators. We construct the effective chiral Lagrangian with hadronic and electromagnetic interactions that originate from them, which serves as the basis for calculations of low-energy observables. The form of the effective interactions depends on the chiral properties of these operators. We develop a power-counting scheme and calculate within this scheme, as an example, the parity- and time-reversal-violating pion-nucleon form factor. We also discuss the electric dipole moments of the nucleon and light nuclei.
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Cite
@article{arxiv.1212.0990,
title = {The Effective Chiral Lagrangian From Dimension-Six Parity and Time-Reversal Violation},
author = {J. de Vries and E. Mereghetti and R. G. E. Timmermans and U. van Kolck},
journal= {arXiv preprint arXiv:1212.0990},
year = {2013}
}
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