QCD jets, the hadronic remnants of hard-scattered quarks and gluons, are
produced copiously in high energy colliders. Heavy ion collisions at
RHIC put QCD jets to a new use, with jet energy loss ("jet quenching")
providing an in-principle calibrated and calculable probe of hot QCD
matter. Jet quenching is by now well established experimentally, through
several measurement channels. However, full jet reconstruction in heavy
ion collisions is challenging due to large event background, and jet
quenching measurements have thus far relied on high pT hadron
distributions, which give a biased and incomplete view of the fate of
jets in hot matter. In a surprising recent theoretical development, it
turns out that the precision of jet measurements needed in the search
for new physics in high luminosity (1034) p+p collisions at the LHC is
similarly limited by large background (pile-up) effects, and that
similar QCD-based techniques can be used for jet signal/background
discrimination in high lumi p+p at the LHC and in heavy ion collisions
at both RHIC and LHC. In this talk I will briefly review the jet
quenching story at RHIC, and then discuss the application of these new
jet algorithms to STAR heavy ion collision data and the prospects for
truly unbiased jet measurements in heavy ion collisions at RHIC and the LHC.