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We present a detailed theoretical and experimental study of Feshbachresonances in the 6Li-40K mixture. Particular attention is given to theinelastic scattering properties, which have not been considered before. As animportant example, we thoroughly investigate both elastic and inelasticscattering properties of a resonance that occurs near 155 G. Our theoreticalpredictions based on a coupled channels calculation are found in excellentagreement with the experimental results. We also present theoretical results onthe molecular state that underlies the 155G resonance, in particular concerningits lifetime against spontaneous dissociation. We then present a survey ofresonances in the system, fully characterizing the corresponding elastic andinelastic scattering properties. This provides the essential information toidentify optimum resonances for applications relying on interaction control inthis Fermi-Fermi mixture.

the european physical journal. d, atomic, molecular and optical physics/the european physical journal. d, atomic, molecular, optical and plasma physics

Feshbach resonances in the 6Li-40K Fermi-Fermi mixture: Elastic versus inelastic interactions