2005/12/29 by S. E. A. Orrigo, H. Lenske, F. Cappuzzello +6 · 34 citations
Physics and Astronomy · #Atomic and Molecular Physics #Atomic physics #Condensed matter physics #Coupling (piping) #Excitation #Excited state #Fano plane #Fano resonance #Geometry #Materials science #Molecular physics #Nuclear physics research studies #Physics #Plasmon #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Quasiparticle #Resonance (particle physics) #nucl-ex #nucl-th
paper · pdf · doi:10.1016/j.physletb.2005.12.046
published in Physics Letters B 633(4-5), 469-473 (Elsevier BV) · 11 pages, 1 figure
openalex publication_date 2005/12/29 · arxiv created 2006/03/07 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Fano-resonances are investigated as a new continuum excitation mode in exotic nuclei. By theoretical model calculations we show that the coupling of a single particle elastic channel to closed core-excited channels leads to sharp resonances in the low-energy continuum. A signature for such bound states embedded in the continuum (BSEC) are characteristic interference effects leading to asymmetric line shapes. Following the quasiparticle-core coupling model we consider the coupling of 1-QP (one-quasiparticle) and 3-QP components and find a number of long-living resonance structures close to the particle threshold. Results for 15C are compared with experimental data, showing that the experimentally observed spectral distribution and the interference pattern are in qualitative agreement with a BSEC interpretation.