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Un-oriented Quiver Theories for Majorana Neutrons | | Andrea Addazi
; Massimo Bianchi
; | | Date: |
5 Feb 2015 | | 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-ar{n} limits. Finally we briefly comment on Pati-Salam extensions of our
models. | | Source: | arXiv, 1502.1531 | | Services: | Forum | Review | PDF | Favorites | |
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