Flavor Structure of Scherk-Schwarz Supersymmetry Breaking and Constraints from Low Energy Processes

5D orbifold has two attractive features: quasi-localized matter fields can naturally reproduce hierarchical Yukawa coupling, while supersymmetry breaking is inherently built in by the Scherk-Schwarz mechanism. We examine the consequence of this quasi-localization and the Scherk-Schwarz supersymmetry breaking in low energy flavor violating processes, under the assumption that physics below the compactification scale is described by the minimal supersymmetric standard model (MSSM) and find $BR(\mu \to e,\gamma)$ and $\epsilon_K$ impose stringent constraint on flavor structure of the Scherk-Schwarz supersymmetry breaking. Chirality measurement in lepton flavor violating processes is crucial to deduce the surviving flavor structure.