Electric Dipole Moments of Nucleons, Nuclei, and Atoms: The Standard Model and Beyond

By Jonathan Engel, M. Ramsey-Musolf, U. van Kolck. 2013

489 citations recorded by the source corpus.

Searches for the permanent electric dipole moments (EDMs) of molecules, atoms, nucleons and nuclei provide powerful probes of CP violation both within the Standard Model and beyond the Standard Model (BSM). The interpretation of experimental EDM limits requires careful delineation of physics at a wide range of scales, from the long-range atomic and molecular scales to the short-distance dynamics of physics at or beyond the Fermi scale. In this review, we provide a framework for disentangling contributions from physics at these disparate scales, building out from the set of dimension four and six effective operators that embody CP violation at the Fermi scale. We survey computations of hadronic and nuclear matrix elements associated with Fermi-scale CP violation in systems of experimental interest and quantify the present level of theoretical uncertainty in these calculations. Using representative BSM scenarios of current interest, we discuss ways in which the interplay of physics at various scales can generate EDMs at a potentially observable level.

Subfields: Atomic and Molecular Physics, and Optics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/8e3fdeaf93ad8a87625cc812c1394ff691370c8d

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Citations in the corpus

Roadmap on STIRAP applications (2019, background): “The eEDM searches with increased sensitivity continue to probe deeper into the energy range available for new particles, typically at or above the TeV energy scale [25, 26].”
Measuring the electric dipole moment of the electron in BaF (2018, background): “ between the electrons and the quarks in the atomic nuclei. Theoretical tools are needed to disentangle the dierent contributions and to relate these to CPviolating observables measured at colliders [19, 20]. In recent years, experiments with neutral diatomics have set new stringent experimental eED”
Electric dipole moments of atoms, molecules, nuclei, and particles (2017, methodology): “…Lamoreaux (1994), Khriplovich and Lamoreaux (1997), Commins (1999), Sandars (2001), Ginges and Flambaum (2004), Pospelov and Ritz (2005), Commins (2007), Roberts and Marciano (2009), Chupp (2010), Dubbers and Schmidt (2011), Engel et al. (2013), Roberts et al. (2015), and Yamanaka et al. (2017).”
Search for New Physics with Atoms and Molecules (2017, background): “Based on very general considerations in quantum field theory, at low energies the largest effects of CPV are expected to appear as T,PV interactions rather than T - violating but P -conserving (TV) signals (Khriplovich and Lamoureaux, 1997).”