Neutron Electric Dipole Moment Induced by the Strangeness Revisited

Abstract

We have revisited the calculation of the neutron electric dipole moment in the presence of the CP-violating operators up to dimension five based on the chiral perturbation theory. Especially, we focus on the contribution of strangeness content. In the calculation, we extract the nucleon matrix elements of scalar-type quark operators from the results of the lattice QCD simulations, while those of the dipole-type quark-gluon operators are evaluated by using the method of the QCD sum rules. As a result, it is found that although the strangeness quantity in nucleon is small, the contribution of the chromoelectric dipole moment of strange quark may be still sizable, and thus may offer a sensitive probe for the CP-violating interactions in physics beyond the Standard Model.

20 pages, 3 figures

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Cited by in corpus (10)

• Unraveling models of CP violation through electric dipole moments of light nuclei
• Contribution of the QCD $\Theta$-term to nucleon electric dipole moment
• Weinberg operator contribution to the nucleon electric dipole moment in the quark model
• Exploring the Flavor Symmetry Landscape
• Probing the high scale SUSY in CP violations of K, B0 and Bs mesons
• $K_L\to {\pi }^0\nu \bar{\nu }$ decay correlating with ${\epsilon }_K$ in high-scale SUSY
• Renormalization Effects on Electric Dipole Moments in Electroweakly Interacting Massive Particle Models
• Sensitivity of High-Scale SUSY in Low Energy Hadronic FCNC
• Contribution of the Weinberg-type Operator to atomic and nuclear electric dipole moments
• One-loop matching for quark dipole operators in a gradient-flow scheme