Year: 2001
Type: article
Abstract: Contributions to the neutron's electric dipole moment (EDM), ${d}_{n},$ are calculated using a well-constrained ansatz for the nucleon's Poincar\'e 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 $\mathrm{CP}$ and T violating interactions: $i{\ensuremath{\gamma}}_{5}{\ensuremath{\sigma}}_{\ensuremath{\mu}\ensuremath{\nu}}{(p}_{1}\ensuremath{-}{p}_{2}{)}_{\ensuremath{\nu}}$ and ${\ensuremath{\gamma}}_{5}{(p}_{1}{+p}_{2}{)}_{\ensuremath{\mu}},$ 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 $\mathrm{CP}$ violation is close to the current experimental upper bound.
Source: Physical Review C
Authors: M. B. Hecht, C. D. Roberts, S. M. Schmidt
Institutions: Argonne National Laboratory, University of Tübingen
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W1965897867