How to Study Efimov States in Exotic Nuclei?

The existence of Efimov states in atomic nuclei has been predicted by several authors considering 3-body systems of the form Core-neutron-neutron. While these states appear elusive and very challenging experimentally, we discuss possible reactions that can be used to produce and study them in exotic (weakly-bound) nuclei. Following simple arguments, we show that cross-sections relative to the ground states should scale with the parameter $${\lambda_0}$$ , which is the same scale factor for binding energies and radii. We derive back of the envelope estimates for: one- and two-neutron transfer reactions, and inelastic scattering. The ( d, p) reaction appears as the most promising approach and we discuss in more detail some experimental considerations using the example of $${^{19}C(d, p)^{20}C}$$ . These initial estimates could serve as a starting point for more refined and realistic calculations, which will be required for careful experimental planning and further analysis. [ABSTRACT FROM AUTHOR]