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

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

1999-12-20

arxiv.org/abs/hep-ph/9912429v2

JHEP 0005 (2000) 013

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 3 figures, v2: a typo in Fig.2 corrected

Scientific paper

10.1088/1126-6708/2000/05/013

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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