New broad 8Be nuclear resonances

Details New broad 8Be nuclear resonances New broad 8Be nuclear resonances

2005-06-20

arxiv.org/abs/nucl-th/0506063v2

Phys.Rev.C72:054312,2005

Physics

Nuclear Physics

Nuclear Theory

16 pages, LaTeX

Scientific paper

10.1103/PhysRevC.72.054312

Energies, total and partial widths, and reduced width amplitudes of 8Be resonances up to an excitation energy of 26 MeV are extracted from a coupled channel analysis of experimental data. The presence of an extremely broad J^pi = 2^+ ``intruder'' resonance is confirmed, while a new 1^+ and very broad 4^+ resonance are discovered. A previously known 22 MeV 2^+ resonance is likely resolved into two resonances. The experimental J^pi T = 3^(+)? resonance at 22 MeV is determined to be 3^-0, and the experimental 1^-? (at 19 MeV) and 4^-? resonances to be isospin 0.

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