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Partial Split Supersymmetry with bilinear R-parity violation allows toreproduce all neutrino mass and mixing parameters. The viable dark mattercandidate in this model is the gravitino. We study the hypothesis that bothpossibilities are true: Partial Split Supersymmetry explains neutrino physicsand that dark matter is actually composed of gravitinos. Since the gravitinohas a small but non-zero decay probability, its decay products could beobserved in astrophysical experiments. Combining bounds from astrophysicalphoton spectra with the bounds coming from the mass matrix in the neutrinosector we derive a stringent upper limit for the allowed gravitino mass. Thismass limit is in good agreement with the results of direct dark mattersearches.

Gravitino Dark Matter and Neutrino Masses in Partial Split Supersymmetry