Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2005-05-27
Phys.Lett. B624 (2005) 239-249
Physics
High Energy Physics
High Energy Physics - Phenomenology
15 pages, 3 figures, 1 table. Comments added
Scientific paper
10.1016/j.physletb.2005.08.027
We point out that the null results of the hadronic electric dipole moment (EDM) searches constrain orbifold grand unified theories (GUTs), where the GUT symmetry and supersymmetry (SUSY) are both broken by boundary conditions in extra dimensions and it leads to rich fermion and sfermion flavor structures. A marginal chromoelectric dipole moment (CEDM) of the up quark is induced by the misalignment between the CP violating left- and right-handed up-type squark mixings, in contrast to the conventional four-dimensional SUSY GUTs. The up quark CEDM constraint is found to be as strong as those from charged lepton flavor violation (LFV) searches. The interplay between future EDM and LFV experiments will probe the structures of the GUTs and the SUSY breaking mediation mechanism.
Hisano Junji
Kakizaki Mitsuru
Nagai Minoru
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