Jet Corrections to Parent Parton Energy

Jet production in hadron collisions results from the hard scattering of partons. The outgoing partons, which cannot be directly observed because of color confinement, produce jets of particles which can be detected. CMS will correct the measured jet energy for instrumental effects. In addition, some measurements can benefit from further corrections which connect on average the $p_T$ of a jet to the $p_T$ of the associated parton in the hard scattering. This is a correction for theoretical effects which has been computed at the generator level with a Monte Carlo simulation. This parton level correction depends on the flavour of the jet and the physics process being simulated. Here we describe the parton level correction which has been implemented at CMS.