Can you represent neutron as stable superposition of decay products?

In this article (here) it says that unstable particles can be represented as a stable superposition of the decay products. It says this representation is most relevant for when resonances only appear as resonances in cross-section curves, so the unstable particles are not observable (resolvable in time). It says Gamov states are a way of representing unstable particles in the limit of decay going to 0, and uses neutrons as an example for this.

I was wondering if you could instead still represent a neutron as a stable superposition of its decay products (e.g. proton, electron and electron anti-neutrino)? I’m guessing not since I don’t know how this would be able to be linked to neutron decay via the weak interaction of quarks changing flavour.