Split-SUSY versus SUSY GUTS
  The gauge coupling unification is one of main motivations in the split-SUSY scenario, and the existence of the grand unified theories (GUTs) is assumed. We examine how to realize split-SUSY mass spectrum in the context of GUTs and find that the construction of split-SUSY GUTs is by no means straightforward. With R-symmetry breaking sources in the GUT sector,   GUT particles play a role of the messengers in the gauge mediation scenario and their contributions to gaugino masses can be sizable. We find the upper bound on soft scalar masses of   O(10^{10}) GeV from consistency for constructing the split-SUSY GUT. Also, we discuss the attempt to construct R-symmetric GUT models. 
Naoyuki Haba and Nobuchika Okada