Enhanced effect of CP-violating nuclear magnetic quadrupole moment in a HfF+ molecule

L. V. Skripnikov, A. V. Titov, and V. V. Flambaum
Phys. Rev. A 95, 022512 – Published 28 February 2017

Abstract

The HfF+ cation is a very promising system to use in the search for the electron electric dipole moment (EDM), and a corresponding experiment is carried out by JILA group [H. Loh, K. C. Cossel, M. C. Grau, K.-K. Ni, E. R. Meyer, J. L. Bohn, J. Ye, and E. A. Cornell, Science 342, 1220 (2013); K.-K. Ni, H. Loh, M. Grau, K. C. Cossel, J. Ye, and E. A. Cornell, J. Mol. Spectrosc. 300, 12 (2014). Here we theoretically investigate the cation to search for another effect which violates time-reversal (T) and spatial parity (P) symmetries—the nuclear magnetic quadrupole moment (MQM) interaction with electrons. We report an accurate ab initio relativistic electronic structure calculations of the molecular parameter WM=0.494 1033Hzecm2 that is required to interpret the experimental data in terms of the MQM of the Hf nucleus. For this we have implemented and applied the combined Dirac-Coulomb(-Gaunt) and relativistic effective core potential approaches to treat electron correlation effects from all of the electrons and to take into account high-order correlation effects using the coupled cluster method with single, double, triple and noniterative quadruple cluster amplitudes. We discuss interpretation of the MQM effect in terms of the strength constants of T,P-odd nuclear forces, proton and neutron EDMs, the QCD parameter θ, and quark chromo-EDMs.

  • Received 12 January 2017

DOI:https://doi.org/10.1103/PhysRevA.95.022512

©2017 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & OpticalNuclear Physics

Authors & Affiliations

L. V. Skripnikov1,2,*, A. V. Titov1,2,†, and V. V. Flambaum3

  • 1National Research Centre “Kurchatov Institute” B.P. Konstantinov Petersburg Nuclear Physics Institute, Gatchina, Leningrad District 188300, Russia
  • 2Saint Petersburg State University, 7/9 Universitetskaya Naberezhnaya, Saint Petersburg 199034, Russia
  • 3School of Physics, The University of New South Wales, Sydney, New South Wales 2052, Australia

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Issue

Vol. 95, Iss. 2 — February 2017

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