Beschreibung:
<jats:title>A<jats:sc>bstract</jats:sc>
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<jats:p>Motivated by results from the LHC and dark matter searches, we study the possibility of phenomenologically viable R-parity violation in SU(5) GUT models from a top-down point of view. We show that in contrast to the more model dependent bounds on the proton lifetime, the limits on neutrino masses provide a robust, stringent and complementary constraint on all SU(5) GUT-based R-parity violating models. Focusing on wellmotivated string/<jats:italic>M</jats:italic> theory GUT frameworks with mechanisms for doublet-triplet splitting and a solution to the <jats:italic>μ/Bμ</jats:italic> problems, we show that imposing the neutrino mass bounds implies that R-parity violation is disfavored. The arguments can also be generalized to minimal SO(10) GUTs. An experimental observation of R-parity violation would, therefore, disfavor such classes of top-down GUT models.</jats:p>