<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi mathvariant="script">P</mml:mi><mml:mo>,</mml:mo><mml:mi mathvariant="script">T</mml:mi></mml:mrow></mml:math>
-odd and magnetic hyperfine-interaction constants and excited-state lifetime for 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msup><mml:mrow><mml:mi>HfF</mml:mi></mml:mrow><mml:mo>+</mml:mo></mml:msup></mml:math>

Fleig, Timo

doi:10.1103/physreva.96.040502

Cited by 64 publications

(38 citation statements)

References 38 publications

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“…In this plot in Figure 3 on page 16 also results of calculations reported by Fleig for the two molecules, HfF + and ThO, where a 3 ∆-state is of relevance for experiments, are included. [54] It can be inferred that the ratio W d /W s is rather insensitive to the chemical environment of the heavy nucleus, but is essentially determined by the exponential Z-dependence determined in Figure 3 on page 16.…”

Section: Ratio Of P T -Violating Propertiesmentioning

confidence: 99%

Systematic study of relativistic and chemical enhancements of P,T -odd effects in polar diatomic radicals

et al. 2019

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Polar diatomic molecules that have, or are expected to have a 2 Σ 1/2 -ground state are studied systematically with respect to simultaneous violation of parity P and time-reversal T with numerical methods and analytical models. Enhancements of P, T -violating effects due to an electric dipole moment of the electron (eEDM) and P, T -odd scalar-pseudoscalar nucleon-electron current interactions are analyzed by comparing trends within columns and rows of the periodic table of the elements. For this purpose electronic structure parameters are calculated numerically within a quasi-relativistic zeroth order regular approximation (ZORA) approach in the framework of complex generalized Hartree-Fock (cGHF) or Kohn-Sham (cGKS). Scaling relations known from analytic relativistic atomic structure theory are compared to these numerical results. Based on this analysis, problems of commonly used relativistic enhancement factors are discussed. Furthermore the ratio between both P, T -odd electronic structure parameters mentioned above is analyzed for various groups of the periodic table. From this analysis an analytic measure for the disentanglement of the two P, T -odd electronic structure parameters with multiple experiments in dependence of electronic structure enhancement factors is derived. arXiv:1805.05494v2 [physics.chem-ph]

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Section: Ratio Of P T -Violating Propertiesmentioning

confidence: 99%

Systematic study of relativistic and chemical enhancements of P,T -odd effects in polar diatomic radicals

et al. 2019

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“…Currently, measurements of molecular systems give rise to the most stringent constraints on the electron EDM and electron-nucleon couplings, due to the huge effective inner-molecular electric field. We use [107][108][109][110][111][112] C S is defined below Eq. (41); in that expression Z and N of the heaviest atom of the molecule should be used, yielding an approximately universal coefficient.…”

Section: Contributions To Nuclear Atomic and Molecular Edmsmentioning

confidence: 99%

The phenomenology of electric dipole moments in models of scalar leptoquarks

Dekens

Vries

Jung

et al. 2019

J. High Energ. Phys.

106

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We study the phenomenology of electric dipole moments (EDMs) induced in various scalar leptoquark models. We consider generic leptoquark couplings to quarks and leptons and match to Standard Model effective field theory. After evolving the resulting operators to low energies, we connect to EDM experiments by using up-to-date hadronic, nuclear, and atomic matrix elements. We show that current experimental limits set strong constraints on the possible CP-violating phases in leptoquark models. Depending on the quarks and leptons involved in the interaction, the existing searches for EDMs of leptons, nucleons, atoms, and molecules all play a role in constraining the CP-violating couplings. We discuss the impact of hadronic and nuclear uncertainties as well as the sensitivities that can be achieved with future EDM experiments. Finally, we study the impact of EDM constraints on a specific leptoquark model that can explain the recent B-physics anomalies. arXiv:1809.09114v2 [hep-ph]

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“…In the correlation calculations 20 electrons of Hf and F were included explicitly while 60 (1s..4f ) electrons of Hf were modeled by the GRECP operator. For the calculations we have used the [12,16,16,10,8]/(6,5,5,3,1) basis set for Hf and [14,9,4,3]/(4,3,2,1) ANO-I basis set for F [44] used previously [12,[45][46][47]. The uncertainty of the calculation for the considered off-diagonal electronic matrix element (5) (which has two-electron excitation as a leading contributions and therefore determined by pure correlation effects) can be estimated as 50% which is enough for the current purposes.…”

Section: Electronic Structure Calculation Detailsmentioning

confidence: 99%

HfF+ as a candidate to search for the nuclear weak quadrupole moment

et al. 2019

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Nuclei with a quadrupole deformation such as 177 Hf have enhanced weak quadrupole moment which induces the tensor weak electron-nucleus interaction in atoms and molecules. Corresponding parity non-conserving (PNC) effect is strongly enhanced in the 3 ∆1 electronic state of the 177 HfF + cation which has very close opposite parity levels mixed by this tensor interaction. In the present paper we perform relativistic many-body calculations of this PNC effect. It is shown that the tensor weak interaction induced by the weak quadrupole moment gives the dominating contribution to the PNC effects in 177 HfF + which significantly exceeds contributions of the vector anapole moment and the scalar weak charge. The anapole and the weak charge can contribute due to the nonadiabatic mechanism proposed here. Therefore, corresponding experiment will allow one to separate the tensor weak PNC effect from the other PNC effects and to measure the quadrupole moment of the neutron distribution which gives the dominating contribution to the weak quadrupole moment.

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P,T -odd and magnetic hyperfine-interaction constants and excited-state lifetime for HfF+

Cited by 64 publications

References 38 publications

Systematic study of relativistic and chemical enhancements of P,T -odd effects in polar diatomic radicals

Systematic study of relativistic and chemical enhancements of P,T -odd effects in polar diatomic radicals

The phenomenology of electric dipole moments in models of scalar leptoquarks

HfF+ as a candidate to search for the nuclear weak quadrupole moment

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