Abstract
Using an effective field theory approach, we calculate the neutron electric dipole moment (nEDM) in the minimal left-right symmetric model with both explicit and spontaneous CP violations. We integrate out heavy particles to obtain flavor-neutral CPviolating effective Lagrangian. We run the Wilson coefficients from the electroweak scale to the hadronic scale using one-loop renormalization group equations. Using the state-of-theart hadronic matrix elements, we obtain the nEDM as a function of right-handed W-boson mass and CP-violating parameters. We use the current limit on nEDM combined with the kaon-decay parameter ϵ to provide the most stringent constraint yet on the left-right symmetric scale \(M_{w_{R}}> (10 \pm 3) {\rm TeV} \).
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ArXiv ePrint: 0910.2265
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Xu, F., An, H. & Ji, X. Neutron electric dipole moment constraint on scale of minimal left-right symmetric model. J. High Energ. Phys. 2010, 88 (2010). https://doi.org/10.1007/JHEP03(2010)088
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DOI: https://doi.org/10.1007/JHEP03(2010)088