Fig. 2 | Nature Communications

Fig. 2

From: Above-threshold scattering about a Feshbach resonance for ultracold atoms in an optical collider

Fig. 2

Loss spectroscopy in an optical collider. Feshbach loss as a function of magnetic field B for five collision energies E nom/k B as annotated. Each data set has been vertically offset proportional to E nom; a data point (circle) represents the mean of typically five loss measurements with error bars denoting the standard error of the mean. The solid lines are a moving average to guide the eye. The threshold resonance position B 0 is indicated by a dot-dashed blue line, and the theoretically predicted shift in the resonance position is shown by a gray dashed line, surrounded by a shaded gray region displaying the expected collision energy spread δE \(\sqrt {{E_{{\rm{nom}}}}} \) due to the finite temperature of the cloud as discussed in the text and “Methods”