### Abstract

Background: Direct measurement of the electric dipole moment (EDM) of the neutron is in the future; measurement of a nuclear EDM may well come first. The deuteron is one nucleus for which exact model calculations are feasible. Purpose: We explore the model dependence of deuteron EDM calculations. Methods: Using a separable potential formulation of the Hamiltonian, we examine the sensitivity of the deuteron EDM to variation in the nucleon-nucleon interaction. We write the EDM as the sum of two terms, the first depending on the target wave function with plane-wave intermediate states, and the second depending on intermediate multiple scattering in the 3P
_{1}
channel, the latter being sensitive to the off-shell behavior of the 3P
_{1}
amplitude. Results: We compare the full calculation with the plane-wave approximation result, examine the tensor force contribution to the model results, and explore the effect of short-range repulsion found in realistic, contemporary potential models of the deuteron. Conclusions: Because one-pion exchange dominates the EDM calculation, separable potential model calculations will provide an adequate description of the H2 EDM until such time as a measurement better than 10% is obtained.

Original language | English |
---|---|

Article number | 064002 |

Pages (from-to) | 064002-1-064002-8 |

Number of pages | 8 |

Journal | Physical Review C |

Volume | 82 |

Issue number | 6 |

DOIs | |

Publication status | Published - 16 Dec 2010 |

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## Cite this

*Physical Review C*,

*82*(6), 064002-1-064002-8. [064002]. https://doi.org/10.1103/PhysRevC.82.064002