caa a22 4500 445867280 CHVBK 20180317145501.0 cr unu---uuuuu 170323e20111101xx s 000 0 eng 10.1140/epjd/e2011-20071-x doi (NATIONALLICENCE)springer-10.1140/epjd/e2011-20071-x Atom-dimer and dimer-dimer scattering in fermionic mixtures near a narrow Feshbach resonance [Elektronische Daten] [J. Levinsen, D. Petrov] We develop a diagrammatic approach for solving few-body problems in heteronuclear fermionic mixtures near a narrow interspecies Feshbach resonance. We calculate s-, p-, and d-wave phaseshifts for the scattering of an atom by a weakly-bound dimer. The fermionic statistics of atoms and the composite nature of the dimer lead to a strong angular momentum dependence of the atom-dimer interaction, which manifests itself in a peculiar interference of the scattered s- and p-waves. This effect strengthens with the mass ratio and is remarkably pronounced in 40K-(40K-6Li) atom-dimer collisions. We calculate the scattering length for two dimers formed near a narrow interspecies resonance. Finally, we discuss the collisional relaxation of the dimers to deeply bound states and evaluate the corresponding rate constant as a function of the detuning and collision energy. EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg, 2011 Levinsen J. T.C.M. Group, University of Cambridge, Cavendish Laboratory, J. J. Thomson Ave., CB3 0HE, Cambridge, UK aut Petrov D. Laboratoire de Physique Théorique et Modèles Statistiques, CNRS and Université Paris Sud, UMR8626, Bât. 100, 91405, Orsay, France aut The European Physical Journal D Springer-Verlag 65/1-2(2011-11-01), 67-82 1434-6060 65:1-2<67 2011 65 10053 https://doi.org/10.1140/epjd/e2011-20071-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1140/epjd/e2011-20071-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Levinsen J. T.C.M. Group, University of Cambridge, Cavendish Laboratory, J. J. Thomson Ave., CB3 0HE, Cambridge, UK aut NATIONALLICENCE 700 1- Petrov D. Laboratoire de Physique Théorique et Modèles Statistiques, CNRS and Université Paris Sud, UMR8626, Bât. 100, 91405, Orsay, France aut NATIONALLICENCE 773 0- The European Physical Journal D Springer-Verlag 65/1-2(2011-11-01), 67-82 1434-6060 65:1-2<67 2011 65 10053 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer