Is there jet quenching in pPb?

Abstract

Abstract Many features of pPb collisions at the LHC resemble those of full-fledged PbPb collisions. This is suggestive of the formation of a similar deconfined quark–gluon plasma, though on a relatively smaller scale. We show that the resulting characteristic scales relevant for the quenching of high- p ⊥ probes, and jets in particular, are nevertheless small for the relevant p ⊥ range. This establishes these probes as clean observables of modifications on nuclear PDF's.