1301.2336 (Biplob Bhattacherjee et al.)

Natural SUSY's Last Hope: R-parity Violation via UDD Operators    [PDF]

Biplob Bhattacherjee, Jason L. Evans, Masahiro Ibe, Shigeki Matsumoto, Tsutomu T. Yanagida

Here, we give a broad overview of the more natural spectra allowed by the LHC when UDD R-parity violation is allowed. Because R-parity violation removes the missing energy signals in colliders, the experimental constraints on the gluino, stops, sbottoms and higgsinos are relatively mild. We also show that UDD R-parity violation and lepton number conservation can be made consistent with grand unification. This feat is achieved through the product unification, SU(5) X U(3). In this model, mixing of the SM quarks with additional quark like particles charged under the U(3) generate a UDD R-parity violating operator. Furthermore, these models are also capable of generating a "natural" spectra. The emergence of these more natural low-scale spectra relies heavily on the fact that the gaugino masses are non-universal, a natural consequence of product unification.

View original: http://arxiv.org/abs/1301.2336