Kaluza-Klein Mediated supersymmetry breaking.
The four-dimensional effective theories with compactified extra dimensions are considered. We there discuss a new framework for communicating supersymmetry breaking to the visible sector where the radius modulus, which determines the size of extra dimensions, has an auxiliary vacuum expectation value. The modulus couplings generate mass splitting in Kaluza-Klein supermultiplets and they act as messengers of supersymmetry breaking. The soft masses are expressed in terms of renormalization-group functions and the sparticle spectrum is determined by what kind of field propagates in the bulk.
Kobayashi
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Department of Physics, Kyoto University, Kyoto 606-8502, Japan.
Yoshioka
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K