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The nucleon-nucleon interaction has a short range, roughly 1 fm. Therefore if there were to be a bound dineutron, the neutrons would have to be confined within a space roughly this big. The Heisenberg uncertainty principle then dictates a minimum uncertainty in their momentum. This amount of momentum is at the edge of what theoretical calculations suggest ...


I found an explicit form for a baryon current in a paper by B.L. Ioffe. I still have problems understanding a certain aspect, which I thought warranted a new question here: Charge conjugation matrix in baryon current Anyways, to be complete, a current describing the isobar $\Delta^{++}$ can be found in equation (13) there and has the structure $$\eta_\mu ...

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