Neutron oscillation and Baryogenesis from six dimensions

TL;DR

This paper proposes a six-dimensional orbifold model where neutron-antineutron oscillations are observable, proton decay is suppressed, and baryogenesis occurs at around 10 TeV, offering a unified approach to these phenomena.

Contribution

It introduces a novel six-dimensional orbifold framework with localized quarks and leptons that explains neutron oscillations, suppresses proton decay, and accounts for baryogenesis at accessible energy scales.

Findings

Observable neutron-antineutron oscillation predicted.

Proton decay rates naturally suppressed.

Baryogenesis feasible at approximately 10 TeV.

Abstract

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