Observations of Efimov physics on Feshbach resonances in and . The decay of the trapped atomic samples is analyzed according to Eq. (2) and expressed in terms of the loss rate coefficient as a function of the -wave scattering length . The results in (a) were obtained in Florence on a broad Feshbach resonance in atoms . The data in (b) and (c) show the results on from Bar Ilan University  and Rice University , respectively. These two experiments employed Feshbach resonances in two different atomic states.