  Considering one-body and two-body currents, we study the photoassociation and
photodissociation of universal bosonic trimers. Analyzing the relative
importance of these currents we identify two physical scenarios (i) Normal
hierarchy, where naive power counting holds and the one-body current dominates,
and (ii) Strong hierarchy, where the one-body current is suppressed. For both
scenarios we observe that at the high frequency tail, the response function
exhibits log periodic oscillations in transition to or from any continuum state
regardless of the reaction partial wave channel. In contrast, near threshold
log periodic oscillations appear only in the leading $s$-wave components. These
oscillations are the fingerprints of universal Efimov physics. We discuss the
relevance of this effect to contemporary experiments in ultracold atoms.
