s -wave halo effect and the Coulomb barrier top effect on the mirror state of a halo
2000; American Institute of Physics; Volume: 62; Issue: 3 Linguagem: Inglês
10.1103/physrevc.62.034305
ISSN1538-4497
Autores Tópico(s)Quantum Chromodynamics and Particle Interactions
ResumoThe Thomas-Ehrman shift for ${}^{11}\mathrm{Be}$ and ${}^{11}\mathrm{N}$ mirror nuclei, which was recently observed as a differential energy shift between s and other orbital states, is investigated in terms of complex expectation values. In calculating the complex expectation values, we use a new method which was recently proposed within the framework of the complex scaling method. The physical origin of the energy shift can be understood by considering the effects of the s-wave halo and the Coulomb barrier top. These two effects are discussed as another proof of a halo in addition to the observation of large matter radii in the drip-line nuclei.
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