Reliable extraction of the dB(E1)/dE for 11Be from its breakup at 520 MeV/nucleon

We analyze the breakup of the one-neutron halo nucleus Be-11 measured at 520 MeV/nucleon at GSI on Pb and C targets within an eikonal description of the reaction including a proper treatment of special relativity. The Coulomb term of the projectile-target interaction is corrected at first order, while its nuclear part is described at the optical limit approximation. Good agreement with the data is obtained using a description of Be-11, which fits the breakup data of RIKEN. This solves the apparent discrepancy between the dB(E1)/dE estimations from GSI and RIKEN for this nucleus. (C) 2019 The Author(s). Published by Elsevier B.V.