TY - JOUR
T1 - Structure and Reactions of 11Be
T2 - Many-Body Basis for Single-Neutron Halo
AU - Barranco, F.
AU - Potel, G.
AU - Broglia, Ricardo Americo
AU - Vigezzi, E.
PY - 2017/8/24
Y1 - 2017/8/24
N2 - The exotic nucleus Be11 has been extensively studied and much experimental information is available on the structure of this system. We treat, within the framework of renormalized nuclear field theory in both configuration and 3D space, the mixing of bound and continuum single-particle states through the coupling to collective vibrations of the Be10 core. We also take care of the Pauli principle acting not only between the single valence particle explicitly considered and those participating in the collective states, but also between fermions involved in two-phonon virtual states dressing the single-particle motion. In this way, it is possible to simultaneously and quantitatively account for the energies of the 1/2+, 1/2- low-lying states, the centroid and line shape of the 5/2+ resonance and the one-nucleon stripping and pickup absolute differential cross sections involving Be11 as either target or residual nucleus. Also for the dipole transition connecting the 1/2+ and 1/2- parity inverted levels as well as the isotopic shift of the charge radius. Theory provides a unified and exhaustive nuclear structure and reaction characterization of the many-body effects which are at the basis of this paradigmatic one-neutron halo system.
AB - The exotic nucleus Be11 has been extensively studied and much experimental information is available on the structure of this system. We treat, within the framework of renormalized nuclear field theory in both configuration and 3D space, the mixing of bound and continuum single-particle states through the coupling to collective vibrations of the Be10 core. We also take care of the Pauli principle acting not only between the single valence particle explicitly considered and those participating in the collective states, but also between fermions involved in two-phonon virtual states dressing the single-particle motion. In this way, it is possible to simultaneously and quantitatively account for the energies of the 1/2+, 1/2- low-lying states, the centroid and line shape of the 5/2+ resonance and the one-nucleon stripping and pickup absolute differential cross sections involving Be11 as either target or residual nucleus. Also for the dipole transition connecting the 1/2+ and 1/2- parity inverted levels as well as the isotopic shift of the charge radius. Theory provides a unified and exhaustive nuclear structure and reaction characterization of the many-body effects which are at the basis of this paradigmatic one-neutron halo system.
U2 - 10.1103/PhysRevLett.119.082501
DO - 10.1103/PhysRevLett.119.082501
M3 - Journal article
C2 - 28952765
SN - 0031-9007
VL - 119
JO - Physical Review Letters
JF - Physical Review Letters
IS - 8
M1 - 082501
ER -