Gauge mediated supersymmetry breaking without exotics in orbifold compactification

Abstract

We suggest SU(5)${}^{\prime }$ in the hidden sector toward a possible gauge mediated supersymmetry breaking scenario for removing the SUSY flavor problem, with an example constructed in ${\mathbb{Z}}_{12-I}$ with three families. The example we present has the Pati-Salam type classification of particles in the observable sector and has no exotics at low energy. We point out that six or seven very light pairs of $5^{\prime }$ and ${\bar{5}}^{\prime }$ out of ten vectorlike $\five'$ and $\fiveb'$ pairs of SU(5)${}^{\prime }$ is achievable, leading to a possibility of an unstable supersymmetry breaking vacuum. The possibility of different compactification radii of three two tori toward achieving the needed coupling strength is also suggested.

16 pages with 3 figures

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