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We report on measurements of three-body recombination rates in an ultracoldgas of $^7$Li atoms in the extremely nonuniversal regime where the two-bodyscattering length vanishes. We show that the rate is well defined and can bedescribed by two-body parameters only: the scattering length $a$ and theeffective range $R_e$. We find the rate to be energy independent, and, byconnecting our results with previously reported measurements in the universallimit, we cover the behavior of the three-body recombination in the whole rangefrom weak to strong two-body interactions. We identify a nontrivial magneticfield value in the nonuniversal regime where the rate should be stronglyreduced.

Three-body recombination at vanishing scattering lengths in an ultracold Bose gas