A Relativistic Eikonal Model for the Dissociation of One-Neutron Halo Nuclei at High Energy

Abstract

We couple a halo effective field theory (Halo-EFT) structure model at next-to-leading-order (NLO) with an eikonal reaction model, including Coulomb and nuclear interactions (and their interference) at all orders as well as relativistic corrections, in order to describe the breakup of 11 Be measured at 520A MeV at GSI. We also extract the dB(E1)/dE for this nucleus to understand the apparent discrepancy between the E1 strength extracted from the GSI experiment and that obtained from a RIKEN measurement performed at 69A MeV.