Efimov states and their Fano resonances in a neutron-rich nucleus

Details Efimov states and their Fano resonances in a neutron-rich nucleus Efimov states and their Fano resonances in a neutron-rich nucleus

2006-07-27

arxiv.org/abs/quant-ph/0607193v1

Phys.Rev.Lett. 97 (2006) 062503

Physics

Quantum Physics

4 double-column pages, 3 figures

Scientific paper

10.1103/PhysRevLett.97.062503

Asymmetric resonances in elastic n+$^{19}$C scattering are attributed to Efimov states of such neutron-rich nuclei, that is, three-body bound states of the n+n+$^{18}$C system when none of the pairs is bound or some of them only weakly bound. By fitting to the general resonance shape described by Fano, we extract resonance position, width, and the "Fano profile index". While Efimov states have been discussed extensively in many areas of physics, there is only one very recent experimental observation in trimers of cesium atoms. The conjunction that we present of the Efimov and Fano phenomena may lead to experimental realization in nuclei.

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