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

Abstract

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.

4 double-column pages, 3 figures

References in corpus (2)

• Scattering Length Scaling Laws for Ultracold Three-Body Collisions
• Limits on Universality in Ultracold Three-Boson Recombination

Cited by in corpus (10)

• Observation of heteronuclear atomic Efimov resonances
• Universal properties and structure of halo nuclei
• Crossover in the Efimov spectrum
• Efimov physics from a renormalization group perspective
• Neutron${-}^{19}$C scattering near an Efimov state
• Observation of the near-threshold intruder $0^{-}$ resonance in ${}^{12}$Be
• Comment on "Efimov States and their Fano Resonances in a Neutron-Rich Nucleus"
• Neutron${-}^{19}$C scattering: emergence of universal properties in a finite range potential
• Trajectory of virtual, bound and resonant Efimov states
• Neutron-${}^{19}\mathrm{C}$ scattering: Towards including realistic interactions