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Relativistic many-body analysis of the electric dipole moment of Rn223

B. K. Sahoo, Yashpal Singh, and B. P. Das
Phys. Rev. A 90, 050501(R) – Published 7 November 2014

Abstract

We report the results of our ab initio relativistic many-body calculations of the electric dipole moment (EDM) dA arising from the electron-nucleus tensor-pseudotensor (T-PT) interaction, the interaction of the nuclear Schiff moment (NSM) with the atomic electrons and the electric dipole polarizability αd for 223Rn. Our relativistic random-phase approximation results are substantially larger than those of lower-order relativistic many-body perturbation theory and the results based on the relativistic coupled-cluster method with single and double excitations are highly accurate for all three properties that we have considered. We obtain dA=4.85(6)×1020σCT|e|cm from T-PT interaction, dA=2.89(4)×1017S/(|e|fm3) from NSM interaction, and αd=35.27(9)ea03. The former two results in combination with the measured value of 223Rn EDM, when it becomes available, could yield the best limits for the T-PT coupling constant, EDMs, and chromo-EDMs of quarks and θQCD parameter, and would thereby shed light on leptoquark and supersymmetric models that predict CP violation.

  • Figure
  • Received 12 August 2014

DOI:https://doi.org/10.1103/PhysRevA.90.050501

©2014 American Physical Society

Authors & Affiliations

B. K. Sahoo1,*, Yashpal Singh1, and B. P. Das2

  • 1Theoretical Physics Division, Physical Research Laboratory, Navrangpura, Ahmedabad 380009, India
  • 2Theoretical Physics and Astrophysics Group, Indian Institute of Astrophysics, Bangalore 560034, India

  • *bijaya@prl.res.in

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Issue

Vol. 90, Iss. 5 — November 2014

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