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Neutron electric dipole moment: Constituent-dressing and compositeness

M. B. Hecht·C. D. Roberts·S. M. Schmidt
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Abstract

Contributions to the neutron's EDM, are calculated using a well-constrained Ansatz for the nucleon's Poincare' covariant Fadde'ev amplitude. The momentum-dependent quark dressing amplifies the contribution from the current-quarks' EDMs; and dressed-quark confinement and binding make distinguishable the effect of the two CP and T violating interactions: i gamma_5 sigma_{mu nu} (p_1-p_2)_nu and gamma_5 (p_1+p_2)_mu, where p_{1,2} are the current-quarks' momenta. The value of |d_n| obtained using the current-quark EDMs generated by a minimal three Higgs doublet model of spontaneous CP violation is close to the current experimental upper bound.

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M. B. Hecht, C. D. Roberts, S. M. Schmidt. 2001-05-31. Neutron electric dipole moment: Constituent-dressing and compositeness. https://doi.org/10.1103/physrevc.64.025204

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