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arXiv · 1212.0990

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

J. de Vries·E. Mereghetti·R. G. E. Timmermans·U. van Kolck
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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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J. de Vries, E. Mereghetti, R. G. E. Timmermans, U. van Kolck. 2013-08-12. The Effective Chiral Lagrangian From Dimension-Six Parity and Time-Reversal Violation. https://doi.org/10.1016/j.aop.2013.05.022

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