We review results on scattering observables for 4He--4He2 and 3He--4He2 collisions. We also study the effect of varying the coupling constant of the atom-atom interaction on the scattering length.
@article{arxiv.0707.2210,
title = {Ultracold scattering processes in three-atomic helium systems},
author = {Elena A. Kolganova and Alexander K. Motovilov and Werner Sandhas},
journal= {arXiv preprint arXiv:0707.2210},
year = {2007}
}