Universality in the Neutron-C-19 Scattering Using Finite-Range Separable Interactions

Autor(es)

Shalchi, M. A. ; Yamashita, M. T. ; Hadizadeh, M. R. ; Frederico, T. ; Tomio, Lauro

• Tipo de documento: Artigo Científico
• Fonte: FEW-BODY SYSTEMS; v. 58, n. 2 MAR 2017.
• Citações Web of Science: 0

Resumo

We report a study on the low-energy properties of the elastic s-wave scattering of a neutron (n) in the carbon isotope C-19 near the critical condition for the occurrence of an excited Efimov state in the three-body n-n-C-18 system. For the separation energy of the two halo neutrons in C-20 we use the available experimental data. We also investigate to which extent the universal scaling laws, strictly valid in the zero-range limit, will survive when using finite-range interactions. By allowing to vary the n-C-18 binding energy, a scaling behavior for the real and imaginary parts of the s-wave phase-shift delta(0) is verified, emerging some universal characteristics given by the pole-position of k cot(delta(R)(0)) and effective-range parameters. (AU)

• Processo FAPESP: 16/01816-2 - Transição dimensional em sistemas de poucos átomos
• Beneficiário: Marcelo Takeshi Yamashita
• Linha de fomento: Auxílio à Pesquisa - Regular