How many interactions does it take to modify a jet?

It is a continued open question how there can be an azimuthal anisotropy of high p_⊥ p ⊥ particles quantified by a sizable v₂ v 2 in p+Pb collisions when, at the same time, the nuclear modification factor RAA R AA is consistent with unity. We address this puzzle within the framework of the jet quenching model Jewel . In the absence of reliable medium models for small collision systems we use the number of scatterings per parton times the squared Debye mass to characterise the strength of medium modifications. Working with a simple brick medium model we show that, for small systems and not too strong modifications, RAA R AA and v₂ v 2 approximately scale with this quantity. We find that a comparatively large number of scatterings is needed to generate measurable jet quenching. Our results indicate that the RAA R AA corresponding to the observed v₂ v 2 could fall within the experimental uncertainty. Thus, while there is currently no contradiction with the measurements, our results indicate that v₂ v 2 and RAA R AA go hand-in-hand. We also discuss departures from scaling, in particular, due to sizable inelastic energy loss.