On Baryogenesis and $n \bar n$-Oscillations

Understand

We study a simple model where color sextet scalars violate baryon number at tree level but do not give rise to proton decay.

• In particular, we include one light and two heavy sextets with $\Delta B=2$ baryon number violating interactions that induce neutron anti-neutron oscillations.
• This setup also suggests an intimate connection to the generation of the observed baryon asymmetry in the Universe via the out of equilibrium decay of the heavy sextet scalars at around $10^{14}$ GeV.
• The large $SU(3)$-color charges of the scalar fields involved in generating the baryon asymmetry motivate us to study potentially significant washout effects.