Electric dipole moments from Yukawa phases in supersymmetric theories

Details Electric dipole moments from Yukawa phases in supersymmetric theories Electric dipole moments from Yukawa phases in supersymmetric theories

1996-10-25

arxiv.org/abs/hep-ph/9610485v1

Nucl.Phys.B490:3-18,1997

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, figures included, PS-file also available at http://www.ft.uam.es/~strumia/14Art/14Art.html

Scientific paper

10.1016/S0550-3213(97)00060-6

We study quark and electron EDMs generated by Yukawa couplings in supersymmetric models with different gauge groups, using the EDM properties under flavour transformations. In the MSSM (or if soft terms are mediated below the unification scale) the one loop contributions to the neutron EDM are smaller than in previous computations based on numerical methods, although increasing as tan^3\beta. A neutron EDM close to the experimental limits can be generated in SU(5), if tan\beta is large, through the u-quark EDM d_u, proportional to tan^4\beta. This effect has to be taken into account also in SO(10) with large tan\beta, where d_u is comparable to the d-quark EDM, proportional to tan\beta.

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