Probing exotic phenomena at the interface of nuclear and particle physics with the electric dipole moments of diamagnetic atoms: A unique window to hadronic and semi-leptonic CP violation

By N. Yamanaka, B. Sahoo, N. Yoshinaga, Takuso Sato, K. Asahi, B. Das. 2017

198 citations recorded by the source corpus.

Abstract.The current status of electric dipole moments of diamagnetic atoms which involves the synergy between atomic experiments and three different theoretical areas, i.e. particle, nuclear and atomic, is reviewed. Various models of particle physics that predict CP violation, which is necessary for the existence of such electric dipole moments, are presented. These include the standard model of particle physics and various extensions of it. Effective hadron level combined charge conjugation (C) and parity (P) symmetry violating interactions are derived taking into consideration different ways in which a nucleon interacts with other nucleons as well as with electrons. Nuclear structure calculations of the CP-odd nuclear Schiff moment are discussed using the shell model and other theoretical approaches. Results of the calculations of atomic electric dipole moments due to the interaction of the nuclear Schiff moment with the electrons and the P and time-reversal (T) symmetry violating tensor-pseudotensor electron-nucleus are elucidated using different relativistic many-body theories. The principles of the measurement of the electric dipole moments of diamagnetic atoms are outlined. Upper limits for the nuclear Schiff moment and tensor-pseudotensor coupling constant are obtained combining the results of atomic experiments and relativistic many-body theories. The coefficients for the different sources of CP violation have been estimated at the elementary particle level for all the diamagnetic atoms of current experimental interest and their implications for physics beyond the standard model is discussed. Possible improvements of the current results of the measurements as well as quantum chromodynamics, nuclear and atomic calculations are suggested.

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

View Paper: https://www.semanticscholar.org/paper/83c45a7f792ca96a01bc62505490b827e31ac828

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Citations in the corpus

Search for New Physics with Atoms and Molecules (2017, background): “…emphasis on different aspects of the related physics: see, for example, Barr (1993); Chupp (2010); Commins and DeMille (2009); Engel et al. (2013); Fukuyama (2012); Ginges and Flambaum (2004); Jungmann (2013); Khriplovich and Lamoureaux (1997); Pospelov and Ritz (2005), and Yamanaka et al. (2017).”
Electroweak phase transition and baryogenesis in composite Higgs models (2018, unknown): “0×10−26 cm @ 90% CL [65] (see also [66,67]).”
Electric dipole moments of atoms, molecules, nuclei, and particles (2017, background): “…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).”
Parton distributions and lattice-QCD calculations: Toward 3D structure (2020, background): “On the other hand, it affects the contribution of quark electric dipole moments to the neutron electric dipole moment in a way which is relevant for searches of bSM sources of CP-violation (Dubbers and Schmidt, 2011; Yamanaka et al., 2017).”