  We study the impact of finite-range physics on the zero-range-model analysis
of three-body recombination in ultracold atoms. We find that temperature
dependence of the zero-range parameters can vary from one set of measurements
to another as it may be driven by the distribution of error bars in the
experiment, and not by the underlying three-body physics. To study
finite-temperature effects in three-body recombination beyond the zero-range
physics, we introduce and examine a finite-range model based upon a
hyperspherical formalism. The systematic error discussed in the paper may
provide a significant contribution to the error bars of measured three-body
parameters.
