Enhancement of the CP-odd effect in the nuclear electric dipole moment of ${}^6$Li

Abstract

We calculate for the first time the electric dipole moment (EDM) of the ${}^6$Li nucleus within the alpha + p + n three-body cluster model using the Gaussian expansion method, assuming the one meson exchange P, CP-odd nuclear forces. It is found that the EDM of the ${}^6$Li is 2 times more sensitive on the isovector pion exchange P, CP-odd nuclear force than the deuteron EDM, due to the CP-odd interaction between the nucleons and the alpha cluster. The ${}^9$Be EDM is also calculated in the same framework as an alpha + alpha + n three-body system. We also test the ab initio calculation of the EDM of the deuteron, ${}^3$H and ${}^3$He nuclei using the realistic Argonne $v18$ nuclear force. In the ab initio calculations, good agreements with previous studies are obtained. We finally discuss the prospects for the new physics beyond the standard model.

6 pages, 1 figure

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Cited by in corpus (15)

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• A low-energy perspective on the minimal left-right symmetric model
• First Search for Axion-Like Particles in a Storage Ring Using a Polarized Deuteron Beam
• Weinberg operator contribution to the nucleon electric dipole moment in the quark model
• Ab initio calculations of electric dipole moments of light nuclei
• Permanent Electric Dipole Moments of Single-, Two-, and Three-Nucleon Systems
• Revisiting Theoretical Analysis of Electric Dipole Moment of ${}^{129}$Xe
• Effective Field Theory and Time-Reversal Violation in Light Nuclei
• Electric dipole moments of three-nucleon systems in the pionless effective field theory
• Weinberg Operator Contribution to the Hadronic CP Violation
• Weinberg operator contribution to the CP-odd nuclear force in the quark model
• Quark model analysis of the Weinberg operator contribution to the nucleon EDM
• Uncovering an Axion Mechanism with the EDM Portfolio
• Contribution of the Weinberg-type Operator to atomic and nuclear electric dipole moments