Probing nucleon-nucleon interactions in breakup of the one-neutron halo nucleus 11Be on a proton target

A comparison between full few-body Faddeev/Alt-Grassberger-Sandhas (Faddeev/AGS) and continuumdiscretized coupled-channels calculations is made for the resonant and nonresonant breakup of Be-11 on proton target at 63.7 MeV/u incident energy. A simplified two-body model is used for Be-11 which involves an inert Be-10(0(+)) core and a valence neutron. The sensitivity of the calculated observables to the nucleon-nucleon potential dynamical input is analyzed. We show that with the present NN and N-core dynamics the results remain a puzzle for the few-body problem of scattering from light exotic halo nuclei.