Un-oriented Quiver Theories for Majorana Neutrons
Abstract
In the context of un-oriented open string theories, we identify quivers whereby a Majorana mass for the neutron is indirectly generated by exotic instantons. We discuss two classes of (Susy) Standard Model like quivers, depending on the embedding of SU(2)_W in the Chan-Paton group. In both cases, the main mechanism involves a vector-like pair mixing through a non-perturbative mass term. We also discuss possible relations between the phenomenology of Neutron-Antineutron oscillations and LHC physics in these models. In particular, a vector-like pair of color-triplet scalars or color-triplet fermions could be directly detected at LHC, compatibly with n-\bar{n} limits. Finally we briefly comment on Pati-Salam extensions of our models.
Keywords
Cite
@article{arxiv.1502.01531,
title = {Un-oriented Quiver Theories for Majorana Neutrons},
author = {Andrea Addazi and Massimo Bianchi},
journal= {arXiv preprint arXiv:1502.01531},
year = {2015}
}
Comments
More comments on phenomenology and fluxes, Re-discussion of SM-quivers compatible with n-cycles conditions Version accepted by JHEP