Halo EFT for Ne in a spherical formalism

We calculate the electromagnetic properties of the deformed one-neutron halo candidate Ne using Halo effective field theory (Halo EFT). In this framework, Ne is bound via a resonant P-wave interaction between the Ne core and the valence neutron. We set up a spherical formalism for Ne in order to calculate the electromagnetic form factors and the E1-breakup strength distribution into the Ne-neutron continuum at leading order in Halo EFT. The associated uncertainties are estimated according to our power counting. In particular, we assume that the deformation of the Ne core enters at next-to-leading order. It can be accounted for by including the J = 2 excited state of Ne as an explicit field in the effective Lagrangian.