The electron and neutron EDM from supersymmetric see-saw thresholds

Details The electron and neutron EDM from supersymmetric see-saw thresholds The electron and neutron EDM from supersymmetric see-saw thresholds

2010-03-11

arxiv.org/abs/1003.2388v2

Phys.Lett.B694:26-32,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 1 figure. v2: generalized to the full flavor structure, conclusions unchanged

Scientific paper

10.1016/j.physletb.2010.09.021

We consider the corrections that arise at one loop when integrating out heavy fields in supersymmetric models. We show that, in type-I see-saw models, complex A and B terms of the heavy right-handed neutrino give radiative contributions to the neutron EDM, as well as new dominant contributions to the electron EDM. Type-II and type-III see-saw also predict a pure gauge correction that makes complex the masses of the weak gauginos. All the see-saw models can predict observable EDM for the electron and for the neutron in a peculiar ratio.

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