Leakage Studies for a Dual Readout Calorimeter

Measuring the energy of jets with high precision is essential at present and future colliders. A calorimeter is designed to measure the total energy deposited by the particles in the jet. A problem arises from the fact in general, the calorimeter response for e± and γs is different com- pared to the response for hadrons and, since the relative proportions of the energies deposited by electromagnetic (e.m.) and hadronic interactions fluctuate, this difference spoils the energy resolution. The idea behind dual readout calorimetry is to build a calorimeter capable of determining the e.m. fraction for each shower, so as to compensate for the effect these fluctuations on the overall energy resolution. The method aims at optimizing the energy resolution for single hadrons and for jets.