Discrete Symmetries in MSSM D-brane compactifications
Dr. Robert Richter (DESY)

We study the presence of discrete gauge symmetries in D-brane semi-realistic compacti?cations.
After establishing the constraints for the presence of a discrete gauge symmetry we perform a systematic search for discrete gauge symmetries within semi-realistic D-brane realizations of the MSSM and the MSSM with three right-handed neutrinos.