Many physics processes at the ILC are characterised by multi-jet final states sometimes accompanied by charged leptons and/or missing transverse energy associated with neutrinos or the lightest supersymmetric particles. The reconstruction of the invariant mass of two or more jets will provide a powerful tool for identifying the physical process and in rejecting background. In addition, decays commonly involve a cascade through several massive states, which can be elucidated by mass reconstruction.
An international collaboration CALICE has been formed to develop and optimise central calorimetry for the ILC. UCL is one of seven UK groups in this collaboration and is leading R&D on data acquistion and also involved in simulation studies and testbeam running.
CALICE-UK Long-term DAQ page