2008/05/09 by R. Álvarez-Rodríguez, R. Alvarez-Rodriguez, A. S. Jensen +3 · 2 citations
Physics and Astronomy · #Atomic and Molecular Physics #Nuclear physics research studies #Quantum Chromodynamics and Particle Interactions #nucl-th
paper · pdf · doi:10.1103/physrevc.77.064305
published as Phys.Rev.C77:064305,2008 · 11 pages, 7 figures, accepted for publication in Physical Review C
arxiv created 2008/05/09 · openalex publication_date 2008/06/04 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/01
The complex scaled hyperspherical adiabatic expansion method is used to compute momentum and energy distributions of the three \ensuremathα particles emerging from the decay of low-lying 12C resonances. The large distance continuum properties of the wave functions are crucial and must be accurately calculated. We discuss separately decays of natural-parity states: two 0+, one 1^\ensuremath-, three 2+, one 3^\ensuremath-, two 4+, one 6+, and one of each of unnatural parity 1+,2^\ensuremath-,3+,4^\ensuremath-. The lowest natural-parity state of each J^\ensuremathπ decays predominantly sequentially via the 8Be ground state, whereas other states, including unnatural-parity states, predominantly decay directly to the continuum. We present Dalitz plots and systematic detailed momentum correlations of the emerging \ensuremathα particles.