Universal spectrum of non efimovian three-body resonances at finite scattering length

Using exact solutions of the three-body problem, the spectrum of non efimovian three-body resonances for two identical particles interacting with another one is derived in the regime of large but finite scattering length. The universality of the problem is depicted by using a contact model in the generalized effective range approximation, parameterized by two three-body parameters and the scattering length.