Nuclear Electric Dipole Moment of 3He

Stetcu, I; P Liu, C; Friar, J L; Hayes, A C; Navratil, P

doi:10.1016/j.physletb.2008.06.019

Title: Nuclear Electric Dipole Moment of 3He

Journal Article · Tue Apr 08 00:00:00 EDT 2008 · Physics Letters B, vol. 665, n/a, June 18, 2008, pp. 168

DOI:https://doi.org/10.1016/j.physletb.2008.06.019· OSTI ID:945158

Stetcu, I; P Liu, C; Friar, J L; Hayes, A C; Navratil, P

A permanent electric dipole moment (EDM) of a physical system would require time-reversal (T) violation, which is equivalent to charge-conjugation-parity (CP) violation by CPT invariance. Experimental programs are currently pushing the limits on EDMs in atoms, nuclei, and the neutron to regimes of fundamental theoretical interest. Nuclear EDMs can be studied at ion storage rings with sensitivities that may be competitive with atomic and neutron measurements. Here we calculate the magnitude of the CP-violating EDM of {sup 3}He and the expected sensitivity of such a measurement to the underlying CP-violating interactions. Assuming that the coupling constants are of comparable magnitude for {pi}-, {rho}-, and {omega}-exchanges, we find that the pion-exchange contribution dominates. Finally, our results suggest that a measurement of the {sup 3}He EDM is complementary to the planned neutron and deuteron experiments, and could provide a powerful constraint for the theoretical models of the pion-nucleon P,T-violating interaction.

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Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: W-7405-ENG-48

OSTI ID:: 945158

Report Number(s):: LLNL-JRNL-402812; TRN: US0900772

Journal Information:: Physics Letters B, vol. 665, n/a, June 18, 2008, pp. 168, Vol. 665

Country of Publication:: United States

Language:: English

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