2007/03/21 by E. Garrido, D. V. Fedorov, H. O. U. Fynbo +1 · 1 citation
Physics and Astronomy · #Adiabatic process #Atomic and Molecular Physics #Coulomb #Geometry #Isospin #Mixing (physics) #Nuclear physics #Nuclear physics research studies #Particle physics #Physics #Quantum Chromodynamics and Particle Interactions #Quantum electrodynamics #Quantum mechanics #Range (aeronautics) #Resonance (particle physics) #Scaling #Symmetry (geometry) #Symmetry breaking #nucl-th
paper · pdf · doi:10.1016/j.physletb.2007.03.030
published as Phys.Lett.B648:274-278,2007 · 5 pages, 4 figures, to be published in Physics Letters B
arxiv created 2007/03/21 · openalex publication_date 2007/03/24 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The structure of the second 2+ resonance in 6Li is investigated with special emphasis on its isospin 0 components. The wave functions are computed in a three-body model (α+n+p) using the hyperspherical adiabatic expansion method combined with complex scaling. In the decay into three free particles the symmetry conserving short-range interaction dominates at short distance whereas the symmetry breaking Coulomb interaction dominates at intermediate and large distances resulting in substantial isospin mixing. We predict the mixing and the energy distributions of the fragments after decay. Computations are consistent with available experiments. We conjecture that nuclear three-body decays frequently produce such large isospin mixing at large distance where the energy distributions are determined.