Effective Field Theory and Time-Reversal Violation in Light Nuclei

Abstract

Thanks to the unnaturally small value of the QCD vacuum angle $\bar{\theta }<10^{-10}$, time-reversal ($T$) violation offers a window into physics beyond the Standard Model (SM) of particle physics. We review the effective-field-theory framework that establishes a clean connection between $T$-violating mechanisms, which can be represented by higher-dimensional operators involving SM fields and symmetries, and hadronic interactions, which allow for controlled calculations of low-energy observables involving strong interactions. The chiral properties of $T$-violating mechanisms leads to a pattern that should be identifiable in measurements of the electric dipole moments of the nucleon and light nuclei.

arXiv comment35 pages. Accepted for publication in Ann. Rev. Nucl. Part. Sci. 65 (2015)

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• Dimension-5 CP-odd operators: QCD mixing and renormalization
• Enhancement of the CP-odd effect in the nuclear electric dipole moment of ${}^6$Li
• A Storage Ring proton Electric Dipole Moment experiment: most sensitive experiment to CP-violation beyond the Standard Model
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Cited by in corpus (3)

• Electric dipole moment of ${}^{13}$C
• Time-reversal-invariance-violating nucleon-nucleon potential in the 1/N_c expansion
• Electric dipole moments: a theory overview