Improved single sector supersymmetry breaking
- Department of Physics, University of Maryland, College Park, Maryland 20742 (United States)
- Department of Physics, University of California, and Theory Group, Lawrence Berkeley Laboratory, Berkeley, California 94720 (United States)
Building on recent work by Arkani-Hamed and the present authors, we construct realistic models that break supersymmetry dynamically and give rise to composite quarks and leptons, all in a single strongly coupled sector. The most important improvement compared to earlier models is that the second-generation composite states correspond to dimension-2 ''meson'' operators in the ultraviolet. This leads to a higher scale for flavor physics and gives a completely natural suppression of flavor-changing neutral currents. We also construct models in which the hierarchy of Yukawa couplings is explained by the dimensionality of composite states. These models provide an interesting and viable alternative to gravity- and gauge-mediated models. The generic signatures are unification of scalar masses with different quantum numbers at the compositeness scale, and lighter gaugino, Higgsino, and third-generation squark and slepton masses. We also analyze large classes of models that give rise to local vacua with both compositeness and supersymmetry breaking, based on gauge theories with confining, fixed-point, or free-magnetic dynamics. (c) 2000 The American Physical Society.
- OSTI ID:
- 20217742
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 62, Issue 7; Other Information: PBD: 1 Oct 2000; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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