Simple scheme for gauge mediation
- Department of Physics, University of California, Berkeley, California 94720, USA and Theoretical Physics Group, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
We present a simple scheme for constructing models that achieve successful gauge mediation of supersymmetry breaking. In addition to our previous work [H. Murayama and Y. Nomura, Phys. Rev. Lett. 98, 151803 (2007)] that proposed drastically simplified models using metastable vacua of supersymmetry breaking in vectorlike theories, we show there are many other successful models using various types of supersymmetry-breaking mechanisms that rely on enhanced low-energy U(1){sub R} symmetries. In models where supersymmetry is broken by elementary singlets, one needs to assume U(1){sub R} violating effects are accidentally small, while in models where composite fields break supersymmetry, emergence of approximate low-energy U(1){sub R} symmetries can be understood simply on dimensional grounds. Even though the scheme still requires somewhat small parameters to sufficiently suppress gravity mediation, we discuss their possible origins due to dimensional transmutation. The scheme accommodates a wide range of the gravitino mass to avoid cosmological problems.
- OSTI ID:
- 21020512
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 75, Issue 9; Other Information: DOI: 10.1103/PhysRevD.75.095011; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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