An overview of the most recent results on jet quenching physics obtained using PbPb and pPb collision data collected with the CMS experiment at √ s NN =2.76 TeV and √ s NN =5.02 TeV, respectively, will be presented. These measurements make use of many different observables, including momentum imbalance, nuclear modification factor R AA and R pA , as well as flavor dependence of jet quenching, jet shapes and jet fragmentation functions. All these measurements in PbPb and pPb collisions will be

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... ollisions will be presented and compared measurements from reference results. Since many of these observables have low correlation to one-another they serve as useful independent consraints to the nature of the parton energy loss mechanism.