plans for jet energy corrections jet energy scale task force monica vazquez acosta, anwar bhatti,...

Robert Harris, Fermilab3 Factorization l Plan: the jet corrections will be factorized è Correcting for each factor in a fixed sequence up to a level chosen by the user. l Factorization allows a deeper understanding of the jet energy scale and its systematic uncertainty. l Each factor and its error can be separately determined and refined. è Most of the factors can be measured from collision data, e.g. à L1: pile-up and effects of thresholds found in min-bias and zero-bias events.  L2: jet response vs.  relative to barrel found using dijet balance, etc.  L3: jet response vs. P T found in barrel using  /Z + jets, top, etc. è We understand the whole correction by measuring each piece. l Each factor is a residual correction. è This facilitates progress & collaboration through the use of standard tools. L3 Abs: Pt Reco Jet L1 Offset L2 Rel: eta L4 EMF L5 Flavor L6 UE L7 Parton Cali Jet