Absolute Mass Scale Calibration Using Z->mumu

Detailed simulations have been performed, investigating the possibility of calibrating the absolute mass scale of the muon spectrometer by using Z->mumu A sample of 10000 events was processed through DICE/ATRECON applying different scale factors to the magnetic field as a function of phi and eta. It is shown that these scale factors could be retrieved with high accuracy together with the muon energy loss as a function of eta. It is shown that the energy loss in the barrel region could be found with an accuracy of 45 MeV while calibrating at the same time 2 magnetic field scale factors with an accuracy of 0.001.