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The loss of ultracold trapped atoms in the vicinity of a Feshbach resonanceis treated as a two-stage reaction, using the Breit-Wigner theory. The firststage is the formation of a resonant diatomic molecule, and the second one isits deactivation by inelastic collisions with other atoms. This model isapplied to the analysis of recent experiments on $^{87}$Rb, leading to anestimated value of $7\times 10^{-11}$ cm$^{3}/$s for the deactivation ratecoefficient.Comment: LaTeX, 4 pages with 1 figures, uses REVTeX4, uses improved  experimental dat

physical review. a, atomic, molecular, and optical physics/physical review, a, atomic, molecular, and optical physics

Three-body loss of trapped ultracold<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow /><mml:mrow><mml:mn>87</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mi mathvariant="normal">Rb</mml:mi></mml:math>atoms due to a Feshbach resonance

Three-body loss of trapped ultracold87Rbatoms due to a Feshbach resonance