Abstract We report precision, orbital-resolved measurements of three-body recombination near the 159 G p -wave Feshbach resonance in an ultracold gas of 6 Li atoms prepared in their lowest hyperfine state. Using a radio-frequency gated protocol that suppresses magnetic-field transients below the milligauss level, we resolve loss features associated with the |m ℓ |=1 and m ℓ =0 orbital projections. The measured three-body loss coefficient L 3 is well captured by a thermally averaged cascade-recombination model, enabling extraction of the resonance splitting δB and effective-range parameter k e . At the lowest temperature, we obtain δB = 7.6(3) mG and k e = 0.151(6) a 0 -1 , both in quantitative agreement with coupled-channel theory. These results establish orbital-resolved three-body spectroscopy as a precision probe of p -wave scattering and provide a benchmark for microscopic models of resonant few-body loss.
Liu et al. (Tue,) studied this question.
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