Neutron oscillation and baryogenesis from six dimensions

Considering a six-dimensional geometry orbifolded on $S^1/Z_2\times S^1/Z_2$ with quarks and leptons localized on orthogonal branes, we show that the construction admits observable $n-\overline{n}$ oscillation while naturally suppressing the proton decay rates. Consistent with other low-energy observables, the model also accommodates baryogenesis at $\mathcal{O}(10\mathrm{TeV})$ scale.

Figure 1

One-loop diagram contributing to $B$-asymmetry generated from a decaying $S$.