Progress with Particle Flow Calorimetry

Understand

One of the most important requirements for a detector at the ILC is good jet energy resolution.

• It is widely believed that the particle flow approach to calorimetry is the key to achieving the ILC goal of a di-jet invariant mass resolution sigma_m/m < Gamma_Z/m_Z.
• This paper describes the current performance of the PandoraPFA particle flow algorithm.
• For simulated light quark jets in the Tesla TDR detector, the jet energy resolution achieved is better than sigma_E/E ~ 3.4% for jet energies in the range 45-250 GeV.