Universality of $nn$ distributions of $s$-wave $2n$ halos and the unitary limit

Matthias Göbel, Hans-Werner Hammer, Daniel R. Phillips

We calculate neutron-neutron relative-energy distributions of $s$-wave two-neutron ($2n$) halo nuclei using Halo Effective Field Theory (Halo EFT) at leading order. At this order t…