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arXiv · hep-ph/9912429

Dipole moments of the Electron, Neutrino and Neutron in the MSSM without R-parity Symmetry

S. A. Abel·A. Dedes·H. K. Dreiner
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Abstract

We show that in the MSSM without R-parity symmetry there are no new contributions to electron and neutron electric dipole moments (EDMs) at 1-loop induced by the R-parity violating Yukawa couplings. Non-zero EDMs for the electron and neutron first arise at the 2-loop level. As an example we estimate the contribution of a two-loop graph which induces electron EDMs. On the other hand, we show that the (Majorana) neutrino electric and magnetic transition moments are non-zero even at the 1-loop level. Constraints on the R-parity violating couplings are derived from the existing bounds on the neutrino dipole moments.

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S. A. Abel, A. Dedes, H. K. Dreiner. 1999-12-21. Dipole moments of the Electron, Neutrino and Neutron in the MSSM without R-parity Symmetry. https://doi.org/10.1088/1126-6708%2F2000%2F05%2F013

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